78535479 has 16 divisors (see below), whose sum is σ = 115369344. Its totient is φ = 47124000.

The previous prime is 78535477. The next prime is 78535507. The reversal of 78535479 is 97453587.

It is not a de Polignac number, because 78535479 - 2¹ = 78535477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78535477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8449 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (7210584).

Almost surely, 2^78535479 is an apocalyptic number.

78535479 is a deficient number, since it is larger than the sum of its proper divisors (36833865).

78535479 is a wasteful number, since it uses less digits than its factorization.

78535479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23678.

The product of its digits is 1058400, while the sum is 48.

The square root of 78535479 is about 8862.0245429586. The cubic root of 78535479 is about 428.2413823862.

The spelling of 78535479 in words is "seventy-eight million, five hundred thirty-five thousand, four hundred seventy-nine".