88040689 has 9 divisors (see below), whose sum is σ = 96885579. Its totient is φ = 79943160.

The previous prime is 88040683. The next prime is 88040707. The reversal of 88040689 is 98604088.

The square root of 88040689 is 9383.

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

It can be written as a sum of positive squares in only one way, i.e., 5085025 + 82955664 = 2255^2 + 9108^2 .

It is not a de Polignac number, because 88040689 - 2⁵ = 88040657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88040683) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102787 + ... + 103639.

Almost surely, 2^88040689 is an apocalyptic number.

88040689 is the 9383-rd square number.

88040689 is the 4692-nd centered octagonal number.

It is an amenable number.

88040689 is a deficient number, since it is larger than the sum of its proper divisors (8844890).

88040689 is an frugal number, since it uses more digits than its factorization.

88040689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The cubic root of 88040689 is about 444.8645617370.

The spelling of 88040689 in words is "eighty-eight million, forty thousand, six hundred eighty-nine".