88166389 has 2 divisors, whose sum is σ = 88166390. Its totient is φ = 88166388.

The previous prime is 88166381. The next prime is 88166417. The reversal of 88166389 is 98366188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54908100 + 33258289 = 7410^2 + 5767^2 .

It is a cyclic number.

It is not a de Polignac number, because 88166389 - 2³ = 88166381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88166381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44083194 + 44083195.

It is an arithmetic number, because the mean of its divisors is an integer number (44083195).

Almost surely, 2^88166389 is an apocalyptic number.

It is an amenable number.

88166389 is a deficient number, since it is larger than the sum of its proper divisors (1).

88166389 is an equidigital number, since it uses as much as digits as its factorization.

88166389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 49.

The square root of 88166389 is about 9389.6958949691. The cubic root of 88166389 is about 445.0761793581.

The spelling of 88166389 in words is "eighty-eight million, one hundred sixty-six thousand, three hundred eighty-nine".