76977959 has 2 divisors, whose sum is σ = 76977960. Its totient is φ = 76977958.

The previous prime is 76977899. The next prime is 76977961. The reversal of 76977959 is 95977967.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76977959 - 2²⁰ = 75929383 is a prime.

Together with 76977961, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 76977898 and 76977907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76977559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38488979 + 38488980.

It is an arithmetic number, because the mean of its divisors is an integer number (38488980).

Almost surely, 2^76977959 is an apocalyptic number.

76977959 is a deficient number, since it is larger than the sum of its proper divisors (1).

76977959 is an equidigital number, since it uses as much as digits as its factorization.

76977959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7501410, while the sum is 59.

The square root of 76977959 is about 8773.7083949719. The cubic root of 76977959 is about 425.3914897865.

The spelling of 76977959 in words is "seventy-six million, nine hundred seventy-seven thousand, nine hundred fifty-nine".