88689402 has 12 divisors (see below), whose sum is σ = 192160410. Its totient is φ = 29563128.

The previous prime is 88689361. The next prime is 88689409. The reversal of 88689402 is 20498688.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48734361 + 39955041 = 6981^2 + 6321^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (88689409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2463577 + ... + 2463612.

Almost surely, 2^88689402 is an apocalyptic number.

88689402 is an abundant number, since it is smaller than the sum of its proper divisors (103471008).

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

88689402 is a wasteful number, since it uses less digits than its factorization.

88689402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927197 (or 4927194 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 88689402 is about 9417.5050836195. The cubic root of 88689402 is about 445.9545255840.

The spelling of 88689402 in words is "eighty-eight million, six hundred eighty-nine thousand, four hundred two".