84413979 has 72 divisors (see below), whose sum is σ = 146165760. Its totient is φ = 46702656.

The previous prime is 84413977. The next prime is 84414007. The reversal of 84413979 is 97931448.

It is not a de Polignac number, because 84413979 - 2¹ = 84413977 is a prime.

It is a super-2 number, since 2×84413979² = 14251439701224882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84413971) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 664614 + ... + 664740.

It is an arithmetic number, because the mean of its divisors is an integer number (2030080).

Almost surely, 2^84413979 is an apocalyptic number.

84413979 is a deficient number, since it is larger than the sum of its proper divisors (61751781).

84413979 is a wasteful number, since it uses less digits than its factorization.

84413979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 185 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 84413979 is about 9187.7080384610. The cubic root of 84413979 is about 438.6701912450.

The spelling of 84413979 in words is "eighty-four million, four hundred thirteen thousand, nine hundred seventy-nine".