77942408 has 16 divisors (see below), whose sum is σ = 153834000. Its totient is φ = 36920016.

The previous prime is 77942393. The next prime is 77942429. The reversal of 77942408 is 80424977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256238 + ... + 256541.

It is an arithmetic number, because the mean of its divisors is an integer number (9614625).

Almost surely, 2^77942408 is an apocalyptic number.

It is an amenable number.

77942408 is a deficient number, since it is larger than the sum of its proper divisors (75891592).

77942408 is a wasteful number, since it uses less digits than its factorization.

77942408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512804 (or 512800 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 77942408 is about 8828.4997593023. The cubic root of 77942408 is about 427.1606837482.

The spelling of 77942408 in words is "seventy-seven million, nine hundred forty-two thousand, four hundred eight".