87988494 has 32 divisors (see below), whose sum is σ = 198599040. Its totient is φ = 25743200.

The previous prime is 87988493. The next prime is 87988499. The reversal of 87988494 is 49488978.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87988493) 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, 21072 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (6206220).

Almost surely, 2^87988494 is an apocalyptic number.

87988494 is an abundant number, since it is smaller than the sum of its proper divisors (110610546).

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

87988494 is a wasteful number, since it uses less digits than its factorization.

87988494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46016.

The product of its digits is 4644864, while the sum is 57.

The square root of 87988494 is about 9380.2182277386. The cubic root of 87988494 is about 444.7766315758.

It can be divided in two parts, 879884 and 94, that added together give a palindrome (879978).

The spelling of 87988494 in words is "eighty-seven million, nine hundred eighty-eight thousand, four hundred ninety-four".