78967539 has 12 divisors (see below), whose sum is σ = 130359216. Its totient is φ = 45124272.

The previous prime is 78967529. The next prime is 78967541. The reversal of 78967539 is 93576987.

It is not a de Polignac number, because 78967539 - 2⁵ = 78967507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78967529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626664 + ... + 626789.

It is an arithmetic number, because the mean of its divisors is an integer number (10863268).

Almost surely, 2^78967539 is an apocalyptic number.

78967539 is a deficient number, since it is larger than the sum of its proper divisors (51391677).

78967539 is a wasteful number, since it uses less digits than its factorization.

78967539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253466 (or 1253463 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 78967539 is about 8886.3681557766. The cubic root of 78967539 is about 429.0252646213.

The spelling of 78967539 in words is "seventy-eight million, nine hundred sixty-seven thousand, five hundred thirty-nine".