88402391 has 16 divisors (see below), whose sum is σ = 110842368. Its totient is φ = 68493600.

The previous prime is 88402381. The next prime is 88402393. The reversal of 88402391 is 19320488.

It is a happy number.

It is not a de Polignac number, because 88402391 - 2²² = 84208087 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88402393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10766 + ... + 17108.

It is an arithmetic number, because the mean of its divisors is an integer number (6927648).

Almost surely, 2^88402391 is an apocalyptic number.

88402391 is a deficient number, since it is larger than the sum of its proper divisors (22439977).

88402391 is a wasteful number, since it uses less digits than its factorization.

88402391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 88402391 is about 9402.2545700486. The cubic root of 88402391 is about 445.4729491734.

The spelling of 88402391 in words is "eighty-eight million, four hundred two thousand, three hundred ninety-one".