76908431 has 2 divisors, whose sum is σ = 76908432. Its totient is φ = 76908430.

The previous prime is 76908413. The next prime is 76908439. The reversal of 76908431 is 13480967.

Together with previous prime (76908413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76908431 - 2⁶ = 76908367 is a prime.

It is a super-2 number, since 2×76908431² = 11829813517763522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76908439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38454215 + 38454216.

It is an arithmetic number, because the mean of its divisors is an integer number (38454216).

Almost surely, 2^76908431 is an apocalyptic number.

76908431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76908431 is an equidigital number, since it uses as much as digits as its factorization.

76908431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 76908431 is about 8769.7452072452. The cubic root of 76908431 is about 425.2633772329.

The spelling of 76908431 in words is "seventy-six million, nine hundred eight thousand, four hundred thirty-one".