84009144 has 16 divisors (see below), whose sum is σ = 210022920. Its totient is φ = 28003040.

The previous prime is 84009137. The next prime is 84009161. The reversal of 84009144 is 44190048.

It is a super-2 number, since 2×84009144² = 14115072551225472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750167 + ... + 1750214.

Almost surely, 2^84009144 is an apocalyptic number.

It is an amenable number.

84009144 is an abundant number, since it is smaller than the sum of its proper divisors (126013776).

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

84009144 is a wasteful number, since it uses less digits than its factorization.

84009144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500390 (or 3500386 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 84009144 is about 9165.6502224338. The cubic root of 84009144 is about 437.9678048102.

The spelling of 84009144 in words is "eighty-four million, nine thousand, one hundred forty-four".