88290791 has 4 divisors (see below), whose sum is σ = 89608632. Its totient is φ = 86972952.

The previous prime is 88290779. The next prime is 88290823. The reversal of 88290791 is 19709288.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88290791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88290731) 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, 658820 + ... + 658953.

It is an arithmetic number, because the mean of its divisors is an integer number (22402158).

Almost surely, 2^88290791 is an apocalyptic number.

88290791 is a deficient number, since it is larger than the sum of its proper divisors (1317841).

88290791 is a wasteful number, since it uses less digits than its factorization.

88290791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317840.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 88290791 is about 9396.3179490692. The cubic root of 88290791 is about 445.2854138387.

The spelling of 88290791 in words is "eighty-eight million, two hundred ninety thousand, seven hundred ninety-one".