88158989 has 2 divisors, whose sum is σ = 88158990. Its totient is φ = 88158988.

The previous prime is 88158913. The next prime is 88158997. The reversal of 88158989 is 98985188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55383364 + 32775625 = 7442^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 88158989 - 2¹² = 88154893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88158589) 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, 44079494 + 44079495.

It is an arithmetic number, because the mean of its divisors is an integer number (44079495).

Almost surely, 2^88158989 is an apocalyptic number.

It is an amenable number.

88158989 is a deficient number, since it is larger than the sum of its proper divisors (1).

88158989 is an equidigital number, since it uses as much as digits as its factorization.

88158989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 56.

The square root of 88158989 is about 9389.3018377300. The cubic root of 88158989 is about 445.0637269337.

The spelling of 88158989 in words is "eighty-eight million, one hundred fifty-eight thousand, nine hundred eighty-nine".