8478612461 has 4 divisors (see below), whose sum is σ = 9249395424. Its totient is φ = 7707829500.

The previous prime is 8478612449. The next prime is 8478612469. The reversal of 8478612461 is 1642168748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8478612461 - 2⁶ = 8478612397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478612469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385391465 + ... + 385391486.

It is an arithmetic number, because the mean of its divisors is an integer number (2312348856).

Almost surely, 2^8478612461 is an apocalyptic number.

It is an amenable number.

8478612461 is a deficient number, since it is larger than the sum of its proper divisors (770782963).

8478612461 is a wasteful number, since it uses less digits than its factorization.

8478612461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770782962.

The product of its digits is 516096, while the sum is 47.

The square root of 8478612461 is about 92079.3813022221. The cubic root of 8478612461 is about 2039.1144160924.

The spelling of 8478612461 in words is "eight billion, four hundred seventy-eight million, six hundred twelve thousand, four hundred sixty-one".