88408921 has 2 divisors, whose sum is σ = 88408922. Its totient is φ = 88408920.

The previous prime is 88408909. The next prime is 88408933. The reversal of 88408921 is 12980488.

It is a balanced prime because it is at equal distance from previous prime (88408909) and next prime (88408933).

It can be written as a sum of positive squares in only one way, i.e., 68293696 + 20115225 = 8264^2 + 4485^2 .

It is a cyclic number.

It is not a de Polignac number, because 88408921 - 2⁵ = 88408889 is a prime.

It is a super-2 number, since 2×88408921² = 15632274624768482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88408961) 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 as a sum of consecutive naturals, namely, 44204460 + 44204461.

It is an arithmetic number, because the mean of its divisors is an integer number (44204461).

Almost surely, 2^88408921 is an apocalyptic number.

It is an amenable number.

88408921 is a deficient number, since it is larger than the sum of its proper divisors (1).

88408921 is an equidigital number, since it uses as much as digits as its factorization.

88408921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 88408921 is about 9402.6018207728. The cubic root of 88408921 is about 445.4839174542.

The spelling of 88408921 in words is "eighty-eight million, four hundred eight thousand, nine hundred twenty-one".