88690993 has 4 divisors (see below), whose sum is σ = 93358960. Its totient is φ = 84023028.

The previous prime is 88690981. The next prime is 88691017. The reversal of 88690993 is 39909688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88690993 - 2²⁵ = 55136561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88690993.

It is not an unprimeable number, because it can be changed into a prime (88690963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333955 + ... + 2333992.

It is an arithmetic number, because the mean of its divisors is an integer number (23339740).

Almost surely, 2^88690993 is an apocalyptic number.

It is an amenable number.

88690993 is a deficient number, since it is larger than the sum of its proper divisors (4667967).

88690993 is a wasteful number, since it uses less digits than its factorization.

88690993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4667966.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 88690993 is about 9417.5895535960. The cubic root of 88690993 is about 445.9571922289.

The spelling of 88690993 in words is "eighty-eight million, six hundred ninety thousand, nine hundred ninety-three".