84497913 has 12 divisors (see below), whose sum is σ = 123262308. Its totient is φ = 55773600.

The previous prime is 84497893. The next prime is 84497923. The reversal of 84497913 is 31979448.

It can be written as a sum of positive squares in 2 ways, for example, as 56746089 + 27751824 = 7533^2 + 5268^2 .

It is not a de Polignac number, because 84497913 - 2²¹ = 82400761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84497923) 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, 45570 + ... + 47387.

It is an arithmetic number, because the mean of its divisors is an integer number (10271859).

Almost surely, 2^84497913 is an apocalyptic number.

It is an amenable number.

84497913 is a deficient number, since it is larger than the sum of its proper divisors (38764395).

84497913 is a wasteful number, since it uses less digits than its factorization.

84497913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93064 (or 93061 counting only the distinct ones).

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

The square root of 84497913 is about 9192.2746368894. The cubic root of 84497913 is about 438.8155350521.

The spelling of 84497913 in words is "eighty-four million, four hundred ninety-seven thousand, nine hundred thirteen".