77423344 has 20 divisors (see below), whose sum is σ = 150675624. Its totient is φ = 38539328.

The previous prime is 77423329. The next prime is 77423369. The reversal of 77423344 is 44332477.

It is a super-2 number, since 2×77423344² = 11988748392284672, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7027 + ... + 14290.

Almost surely, 2^77423344 is an apocalyptic number.

It is an amenable number.

77423344 is a deficient number, since it is larger than the sum of its proper divisors (73252280).

77423344 is a wasteful number, since it uses less digits than its factorization.

77423344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21552 (or 21546 counting only the distinct ones).

The product of its digits is 56448, while the sum is 34.

The square root of 77423344 is about 8799.0535854716. The cubic root of 77423344 is about 426.2103335092.

The spelling of 77423344 in words is "seventy-seven million, four hundred twenty-three thousand, three hundred forty-four".