76399361 has 4 divisors (see below), whose sum is σ = 80420400. Its totient is φ = 72378324.

The previous prime is 76399357. The next prime is 76399387. The reversal of 76399361 is 16399367.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16399367 = 71 ⋅230977.

It is a cyclic number.

It is not a de Polignac number, because 76399361 - 2² = 76399357 is a prime.

It is a super-2 number, since 2×76399361² = 11673724722416642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76399861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010491 + ... + 2010528.

It is an arithmetic number, because the mean of its divisors is an integer number (20105100).

Almost surely, 2^76399361 is an apocalyptic number.

It is an amenable number.

76399361 is a deficient number, since it is larger than the sum of its proper divisors (4021039).

76399361 is a wasteful number, since it uses less digits than its factorization.

76399361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021038.

The product of its digits is 183708, while the sum is 44.

The square root of 76399361 is about 8740.6728001911. The cubic root of 76399361 is about 424.3230024360.

The spelling of 76399361 in words is "seventy-six million, three hundred ninety-nine thousand, three hundred sixty-one".