88700921 has 2 divisors, whose sum is σ = 88700922. Its totient is φ = 88700920.

The previous prime is 88700897. The next prime is 88700923. The reversal of 88700921 is 12900788.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88153321 + 547600 = 9389^2 + 740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88700921 is a prime.

Together with 88700923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88700923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44350460 + 44350461.

It is an arithmetic number, because the mean of its divisors is an integer number (44350461).

Almost surely, 2^88700921 is an apocalyptic number.

It is an amenable number.

88700921 is a deficient number, since it is larger than the sum of its proper divisors (1).

88700921 is an equidigital number, since it uses as much as digits as its factorization.

88700921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 88700921 is about 9418.1166376298. The cubic root of 88700921 is about 445.9738316405.

The spelling of 88700921 in words is "eighty-eight million, seven hundred thousand, nine hundred twenty-one".