88149989 has 2 divisors, whose sum is σ = 88149990. Its totient is φ = 88149988.

The previous prime is 88149983. The next prime is 88149991. The reversal of 88149989 is 98994188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46444225 + 41705764 = 6815^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 88149989 - 2¹⁶ = 88084453 is a prime.

Together with 88149991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88149983) 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, 44074994 + 44074995.

It is an arithmetic number, because the mean of its divisors is an integer number (44074995).

Almost surely, 2^88149989 is an apocalyptic number.

It is an amenable number.

88149989 is a deficient number, since it is larger than the sum of its proper divisors (1).

88149989 is an equidigital number, since it uses as much as digits as its factorization.

88149989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 56.

The square root of 88149989 is about 9388.8225566362. The cubic root of 88149989 is about 445.0485811541.

The spelling of 88149989 in words is "eighty-eight million, one hundred forty-nine thousand, nine hundred eighty-nine".