239122989 has 48 divisors (see below), whose sum is σ = 418991040. Its totient is φ = 134356320.

The previous prime is 239122937. The next prime is 239122991. The reversal of 239122989 is 989221932.

It is a happy number.

It is not a de Polignac number, because 239122989 - 2¹⁶ = 239057453 is a prime.

It is a super-4 number, since 4×239122989⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239122489) 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 in 47 ways as a sum of consecutive naturals, for example, 79222 + ... + 82184.

It is an arithmetic number, because the mean of its divisors is an integer number (8728980).

Almost surely, 2^239122989 is an apocalyptic number.

It is an amenable number.

239122989 is a deficient number, since it is larger than the sum of its proper divisors (179868051).

239122989 is a wasteful number, since it uses less digits than its factorization.

239122989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047 (or 3034 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 239122989 is about 15463.6020706690. The cubic root of 239122989 is about 620.6886114187.

The spelling of 239122989 in words is "two hundred thirty-nine million, one hundred twenty-two thousand, nine hundred eighty-nine".