87984396 has 36 divisors (see below), whose sum is σ = 222879384. Its totient is φ = 29265600.

The previous prime is 87984389. The next prime is 87984397. The reversal of 87984396 is 69348978.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (87984397) 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, 16411 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (6191094).

Almost surely, 2^87984396 is an apocalyptic number.

It is an amenable number.

87984396 is an abundant number, since it is smaller than the sum of its proper divisors (134894988).

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

87984396 is a wasteful number, since it uses less digits than its factorization.

87984396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222 (or 5217 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 87984396 is about 9379.9997867804. Note that the first 3 decimals coincide. The cubic root of 87984396 is about 444.7697264194.

The spelling of 87984396 in words is "eighty-seven million, nine hundred eighty-four thousand, three hundred ninety-six".