77639422 has 16 divisors (see below), whose sum is σ = 135813600. Its totient is φ = 33273744.

The previous prime is 77639413. The next prime is 77639437. The reversal of 77639422 is 22493677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55903 + ... + 57274.

It is an arithmetic number, because the mean of its divisors is an integer number (8488350).

Almost surely, 2^77639422 is an apocalyptic number.

77639422 is a deficient number, since it is larger than the sum of its proper divisors (58174178).

77639422 is a wasteful number, since it uses less digits than its factorization.

77639422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113200 (or 113186 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 77639422 is about 8811.3235101204. The cubic root of 77639422 is about 426.6064635380.

The spelling of 77639422 in words is "seventy-seven million, six hundred thirty-nine thousand, four hundred twenty-two".