2389807990 has 32 divisors (see below), whose sum is σ = 4410258336. Its totient is φ = 931875840.

The previous prime is 2389807967. The next prime is 2389807991. The reversal of 2389807990 is 997089832.

It is a super-2 number, since 2×2389807990² = 11422364458135680200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389807991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227494 + ... + 237766.

It is an arithmetic number, because the mean of its divisors is an integer number (137820573).

Almost surely, 2^2389807990 is an apocalyptic number.

2389807990 is a deficient number, since it is larger than the sum of its proper divisors (2020450346).

2389807990 is a wasteful number, since it uses less digits than its factorization.

2389807990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10864.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 2389807990 is about 48885.6624175228. The cubic root of 2389807990 is about 1336.9679700728.

The spelling of 2389807990 in words is "two billion, three hundred eighty-nine million, eight hundred seven thousand, nine hundred ninety".