76394457 has 12 divisors (see below), whose sum is σ = 110478420. Its totient is φ = 50869248.

The previous prime is 76394453. The next prime is 76394471. The reversal of 76394457 is 75449367.

76394457 is a `hidden beast` number, since 7 + 639 + 4 + 4 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1121481 + 75272976 = 1059^2 + 8676^2 .

It is not a de Polignac number, because 76394457 - 2² = 76394453 is a prime.

It is a super-2 number, since 2×76394457² = 11672226120649698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76394453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3793 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (9206535).

Almost surely, 2^76394457 is an apocalyptic number.

It is an amenable number.

76394457 is a deficient number, since it is larger than the sum of its proper divisors (34083963).

76394457 is a wasteful number, since it uses less digits than its factorization.

76394457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072 (or 10069 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 76394457 is about 8740.3922680850. The cubic root of 76394457 is about 424.3139232827.

The spelling of 76394457 in words is "seventy-six million, three hundred ninety-four thousand, four hundred fifty-seven".