88981489 has 3 divisors (see below), whose sum is σ = 88990923. Its totient is φ = 88972056.

The previous prime is 88981433. The next prime is 88981513. The reversal of 88981489 is 98418988.

The square root of 88981489 is 9433.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 27123264 = 7865^2 + 5208^2 .

It is a de Polignac number, because none of the positive numbers 2^k-88981489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88981289) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4717 + ... + 14149.

It is an arithmetic number, because the mean of its divisors is an integer number (29663641).

Almost surely, 2^88981489 is an apocalyptic number.

88981489 is the 9433-rd square number.

88981489 is the 4717-th centered octagonal number.

It is an amenable number.

88981489 is a deficient number, since it is larger than the sum of its proper divisors (9434).

88981489 is an frugal number, since it uses more digits than its factorization.

88981489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18866 (or 9433 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 55.

The cubic root of 88981489 is about 446.4435535184.

Multiplying 88981489 by its product of digits (1327104), we get a square (118087689977856 = 10866816²).

The spelling of 88981489 in words is "eighty-eight million, nine hundred eighty-one thousand, four hundred eighty-nine".