87939488 has 144 divisors (see below), whose sum is σ = 225783936. Its totient is φ = 32947200.

The previous prime is 87939479. The next prime is 87939497. The reversal of 87939488 is 88493978.

It is an interprime number because it is at equal distance from previous prime (87939479) and next prime (87939497).

It is a super-4 number, since 4×87939488⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870638 + ... + 870738.

It is an arithmetic number, because the mean of its divisors is an integer number (1567944).

Almost surely, 2^87939488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87939488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112891968).

87939488 is an abundant number, since it is smaller than the sum of its proper divisors (137844448).

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

87939488 is a wasteful number, since it uses less digits than its factorization.

87939488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 146 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The square root of 87939488 is about 9377.6056645607. The cubic root of 87939488 is about 444.6940420973.

It can be divided in two parts, 8793 and 9488, that added together give a palindrome (18281).

The spelling of 87939488 in words is "eighty-seven million, nine hundred thirty-nine thousand, four hundred eighty-eight".