77492493 has 48 divisors (see below), whose sum is σ = 125629504. Its totient is φ = 45722880.

The previous prime is 77492489. The next prime is 77492521. The reversal of 77492493 is 39429477.

77492493 is a `hidden beast` number, since 7 + 74 + 92 + 493 = 666.

It is not a de Polignac number, because 77492493 - 2² = 77492489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77492423) 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 47 ways as a sum of consecutive naturals, for example, 367158 + ... + 367368.

Almost surely, 2^77492493 is an apocalyptic number.

77492493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

77492493 is a deficient number, since it is larger than the sum of its proper divisors (48137011).

77492493 is a wasteful number, since it uses less digits than its factorization.

77492493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 343 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 77492493 is about 8802.9820515550. The cubic root of 77492493 is about 426.3371826268.

The spelling of 77492493 in words is "seventy-seven million, four hundred ninety-two thousand, four hundred ninety-three".