84437490 has 32 divisors (see below), whose sum is σ = 209189376. Its totient is φ = 21790080.

The previous prime is 84437489. The next prime is 84437497. The reversal of 84437490 is 9473448.

It is not an unprimeable number, because it can be changed into a prime (84437497) 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, 44467 + ... + 46326.

It is an arithmetic number, because the mean of its divisors is an integer number (6537168).

Almost surely, 2^84437490 is an apocalyptic number.

84437490 is an abundant number, since it is smaller than the sum of its proper divisors (124751886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84437490 is a wasteful number, since it uses less digits than its factorization.

84437490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90834.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 84437490 is about 9188.9874306150. The cubic root of 84437490 is about 438.7109136372.

The spelling of 84437490 in words is "eighty-four million, four hundred thirty-seven thousand, four hundred ninety".