861452411 has 4 divisors (see below), whose sum is σ = 881486232. Its totient is φ = 841418592.

The previous prime is 861452401. The next prime is 861452461. The reversal of 861452411 is 114254168.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861452411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861452401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10016846 + ... + 10016931.

It is an arithmetic number, because the mean of its divisors is an integer number (220371558).

Almost surely, 2^861452411 is an apocalyptic number.

861452411 is a deficient number, since it is larger than the sum of its proper divisors (20033821).

861452411 is a wasteful number, since it uses less digits than its factorization.

861452411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20033820.

The product of its digits is 7680, while the sum is 32.

The square root of 861452411 is about 29350.5095526466. The cubic root of 861452411 is about 951.5035879546.

The spelling of 861452411 in words is "eight hundred sixty-one million, four hundred fifty-two thousand, four hundred eleven".