77938099 has 6 divisors (see below), whose sum is σ = 81474596. Its totient is φ = 74548980.

The previous prime is 77938093. The next prime is 77938127. The reversal of 77938099 is 99083977.

It is not a de Polignac number, because 77938099 - 2⁷ = 77937971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77938093) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73137 + ... + 74194.

Almost surely, 2^77938099 is an apocalyptic number.

77938099 is a deficient number, since it is larger than the sum of its proper divisors (3536497).

77938099 is a wasteful number, since it uses less digits than its factorization.

77938099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147377 (or 147354 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 77938099 is about 8828.2557167314. The cubic root of 77938099 is about 427.1528118277.

The spelling of 77938099 in words is "seventy-seven million, nine hundred thirty-eight thousand, ninety-nine".