88969999 has 4 divisors (see below), whose sum is σ = 92037960. Its totient is φ = 85902040.

The previous prime is 88969997. The next prime is 88970039. The reversal of 88969999 is 99996988.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88969999 - 2¹ = 88969997 is a prime.

It is a Duffinian number.

88969999 is a modest number, since divided by 9999 gives 8896 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88969997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533937 + ... + 1533994.

It is an arithmetic number, because the mean of its divisors is an integer number (23009490).

Almost surely, 2^88969999 is an apocalyptic number.

88969999 is a deficient number, since it is larger than the sum of its proper divisors (3067961).

88969999 is a wasteful number, since it uses less digits than its factorization.

88969999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067960.

The product of its digits is 22674816, while the sum is 67.

The square root of 88969999 is about 9432.3909482167. The cubic root of 88969999 is about 446.4243365730.

The spelling of 88969999 in words is "eighty-eight million, nine hundred sixty-nine thousand, nine hundred ninety-nine".