84398530 has 16 divisors (see below), whose sum is σ = 152263800. Its totient is φ = 33682432.

The previous prime is 84398521. The next prime is 84398533. The reversal of 84398530 is 3589348.

It can be written as a sum of positive squares in 4 ways, for example, as 80084601 + 4313929 = 8949^2 + 2077^2 .

It is a super-2 number, since 2×84398530² = 14246223732321800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84398533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4909 + ... + 13888.

Almost surely, 2^84398530 is an apocalyptic number.

84398530 is a deficient number, since it is larger than the sum of its proper divisors (67865270).

84398530 is a wasteful number, since it uses less digits than its factorization.

84398530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19253.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 84398530 is about 9186.8672571231. The cubic root of 84398530 is about 438.6434285794.

The spelling of 84398530 in words is "eighty-four million, three hundred ninety-eight thousand, five hundred thirty".