77956379 has 8 divisors (see below), whose sum is σ = 80751360. Its totient is φ = 75168576.

The previous prime is 77956369. The next prime is 77956391. The reversal of 77956379 is 97365977.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77956379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77956379.

It is not an unprimeable number, because it can be changed into a prime (77956369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30287 + ... + 32759.

It is an arithmetic number, because the mean of its divisors is an integer number (10093920).

Almost surely, 2^77956379 is an apocalyptic number.

77956379 is a deficient number, since it is larger than the sum of its proper divisors (2794981).

77956379 is a wasteful number, since it uses less digits than its factorization.

77956379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589.

The product of its digits is 2500470, while the sum is 53.

The square root of 77956379 is about 8829.2909681356. The cubic root of 77956379 is about 427.1862047516.

The spelling of 77956379 in words is "seventy-seven million, nine hundred fifty-six thousand, three hundred seventy-nine".