8214012461 has 4 divisors (see below), whose sum is σ = 8497254300. Its totient is φ = 7930770624.

The previous prime is 8214012449. The next prime is 8214012497. The reversal of 8214012461 is 1642104128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3258697225 + 4955315236 = 57085^2 + 70394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8214012461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 283241809 = 8214012461 / (8 + 2 + 1 + 4 + 0 + 1 + 2 + 4 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8214012431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141620876 + ... + 141620933.

It is an arithmetic number, because the mean of its divisors is an integer number (2124313575).

Almost surely, 2^8214012461 is an apocalyptic number.

8214012461 is the 40532-nd centered decagonal number.

It is an amenable number.

8214012461 is a deficient number, since it is larger than the sum of its proper divisors (283241839).

8214012461 is a wasteful number, since it uses less digits than its factorization.

8214012461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283241838.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 8214012461 is about 90631.1892286535. The cubic root of 8214012461 is about 2017.6776615360.

Adding to 8214012461 its reverse (1642104128), we get a palindrome (9856116589).

The spelling of 8214012461 in words is "eight billion, two hundred fourteen million, twelve thousand, four hundred sixty-one".