77900918 has 8 divisors (see below), whose sum is σ = 116941320. Its totient is φ = 38920480.

The previous prime is 77900917. The next prime is 77900929. The reversal of 77900918 is 81900977.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77900917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11588 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (14617665).

Almost surely, 2^77900918 is an apocalyptic number.

77900918 is a deficient number, since it is larger than the sum of its proper divisors (39040402).

77900918 is a wasteful number, since it uses less digits than its factorization.

77900918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29982.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 77900918 is about 8826.1496701563. The cubic root of 77900918 is about 427.0848754564.

The spelling of 77900918 in words is "seventy-seven million, nine hundred thousand, nine hundred eighteen".