77388962 has 16 divisors (see below), whose sum is σ = 132814080. Its totient is φ = 33129888.

The previous prime is 77388959. The next prime is 77388973. The reversal of 77388962 is 26988377.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77388962.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12839 + ... + 17877.

It is an arithmetic number, because the mean of its divisors is an integer number (8300880).

Almost surely, 2^77388962 is an apocalyptic number.

77388962 is a deficient number, since it is larger than the sum of its proper divisors (55425118).

77388962 is a wasteful number, since it uses less digits than its factorization.

77388962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145.

The product of its digits is 1016064, while the sum is 50.

The square root of 77388962 is about 8797.0996356754. The cubic root of 77388962 is about 426.1472339640.

The spelling of 77388962 in words is "seventy-seven million, three hundred eighty-eight thousand, nine hundred sixty-two".