88921139 has 2 divisors, whose sum is σ = 88921140. Its totient is φ = 88921138.

The previous prime is 88921123. The next prime is 88921153. The reversal of 88921139 is 93112988.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88921139 - 2⁴ = 88921123 is a prime.

It is a super-2 number, since 2×88921139² = 15813937922114642, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 88921096 and 88921105.

It is not a weakly prime, because it can be changed into another prime (88921199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44460569 + 44460570.

It is an arithmetic number, because the mean of its divisors is an integer number (44460570).

Almost surely, 2^88921139 is an apocalyptic number.

88921139 is a deficient number, since it is larger than the sum of its proper divisors (1).

88921139 is an equidigital number, since it uses as much as digits as its factorization.

88921139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 41.

The square root of 88921139 is about 9429.8005811364. The cubic root of 88921139 is about 446.3426000796.

The spelling of 88921139 in words is "eighty-eight million, nine hundred twenty-one thousand, one hundred thirty-nine".