79140537 has 48 divisors (see below), whose sum is σ = 139809600. Its totient is φ = 44089920.

The previous prime is 79140499. The next prime is 79140553. The reversal of 79140537 is 73504197.

It is a happy number.

It is not a de Polignac number, because 79140537 - 2⁷ = 79140409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79140557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53514 + ... + 54972.

It is an arithmetic number, because the mean of its divisors is an integer number (2912700).

Almost surely, 2^79140537 is an apocalyptic number.

It is an amenable number.

79140537 is a deficient number, since it is larger than the sum of its proper divisors (60669063).

79140537 is a wasteful number, since it uses less digits than its factorization.

79140537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 79140537 is about 8896.0967283410. The cubic root of 79140537 is about 429.3383315686.

It can be divided in two parts, 791 and 40537, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 79140537 in words is "seventy-nine million, one hundred forty thousand, five hundred thirty-seven".