77349938 has 4 divisors (see below), whose sum is σ = 116024910. Its totient is φ = 38674968.

The previous prime is 77349919. The next prime is 77349947. The reversal of 77349938 is 83994377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83994377 = 61 ⋅1376957.

It can be written as a sum of positive squares in only one way, i.e., 77141089 + 208849 = 8783^2 + 457^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19337483 + ... + 19337486.

Almost surely, 2^77349938 is an apocalyptic number.

77349938 is a deficient number, since it is larger than the sum of its proper divisors (38674972).

77349938 is a wasteful number, since it uses less digits than its factorization.

77349938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38674971.

The product of its digits is 1143072, while the sum is 50.

The square root of 77349938 is about 8794.8813522412. The cubic root of 77349938 is about 426.0755925426.

It can be divided in two parts, 77349 and 938, that added together give a palindrome (78287).

The spelling of 77349938 in words is "seventy-seven million, three hundred forty-nine thousand, nine hundred thirty-eight".