78436959 has 16 divisors (see below), whose sum is σ = 110275200. Its totient is φ = 49454496.

The previous prime is 78436957. The next prime is 78436987. The reversal of 78436959 is 95963487.

It is not a de Polignac number, because 78436959 - 2¹ = 78436957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78436951) 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, 61672 + ... + 62930.

It is an arithmetic number, because the mean of its divisors is an integer number (6892200).

Almost surely, 2^78436959 is an apocalyptic number.

78436959 is a deficient number, since it is larger than the sum of its proper divisors (31838241).

78436959 is a wasteful number, since it uses less digits than its factorization.

78436959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374.

The product of its digits is 1632960, while the sum is 51.

The square root of 78436959 is about 8856.4642493492. The cubic root of 78436959 is about 428.0622361967.

The spelling of 78436959 in words is "seventy-eight million, four hundred thirty-six thousand, nine hundred fifty-nine".