78971475 has 24 divisors (see below), whose sum is σ = 142437312. Its totient is φ = 38288800.

The previous prime is 78971449. The next prime is 78971479. The reversal of 78971475 is 57417987.

It is not a de Polignac number, because 78971475 - 2¹⁴ = 78955091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78971479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47037 + ... + 48686.

It is an arithmetic number, because the mean of its divisors is an integer number (5934888).

Almost surely, 2^78971475 is an apocalyptic number.

78971475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78971475 is a deficient number, since it is larger than the sum of its proper divisors (63465837).

78971475 is a wasteful number, since it uses less digits than its factorization.

78971475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95747 (or 95742 counting only the distinct ones).

The product of its digits is 493920, while the sum is 48.

The square root of 78971475 is about 8886.5896158200. The cubic root of 78971475 is about 429.0323925095.

The spelling of 78971475 in words is "seventy-eight million, nine hundred seventy-one thousand, four hundred seventy-five".