76409497 has 2 divisors, whose sum is σ = 76409498. Its totient is φ = 76409496.

The previous prime is 76409491. The next prime is 76409533. The reversal of 76409497 is 79490467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 15397776 = 7811^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 76409497 - 2⁷ = 76409369 is a prime.

It is a super-2 number, since 2×76409497² = 11676822463586018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76409491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38204748 + 38204749.

It is an arithmetic number, because the mean of its divisors is an integer number (38204749).

Almost surely, 2^76409497 is an apocalyptic number.

It is an amenable number.

76409497 is a deficient number, since it is larger than the sum of its proper divisors (1).

76409497 is an equidigital number, since it uses as much as digits as its factorization.

76409497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 76409497 is about 8741.2525990272. The cubic root of 76409497 is about 424.3417667630.

The spelling of 76409497 in words is "seventy-six million, four hundred nine thousand, four hundred ninety-seven".