77853964 has 12 divisors (see below), whose sum is σ = 136749088. Its totient is φ = 38782800.

The previous prime is 77853959. The next prime is 77853967. The reversal of 77853964 is 46935877.

It is a happy number.

It is a super-2 number, since 2×77853964² = 12122479421026592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77853967) 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, 34827 + ... + 36994.

Almost surely, 2^77853964 is an apocalyptic number.

It is an amenable number.

77853964 is a deficient number, since it is larger than the sum of its proper divisors (58895124).

77853964 is a wasteful number, since it uses less digits than its factorization.

77853964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72096 (or 72094 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 77853964 is about 8823.4893324580. The cubic root of 77853964 is about 426.9990511636. Note that the first 3 decimals are identical.

The spelling of 77853964 in words is "seventy-seven million, eight hundred fifty-three thousand, nine hundred sixty-four".