990054009689 has 8 divisors (see below), whose sum is σ = 1022992239360. Its totient is φ = 957178342800.

The previous prime is 990054009493. The next prime is 990054009701. The reversal of 990054009689 is 986900450099.

990054009689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990054009689 - 2⁸ = 990054009433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990054003689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15608519 + ... + 15671820.

It is an arithmetic number, because the mean of its divisors is an integer number (127874029920).

Almost surely, 2^990054009689 is an apocalyptic number.

It is an amenable number.

990054009689 is a deficient number, since it is larger than the sum of its proper divisors (32938229671).

990054009689 is a wasteful number, since it uses less digits than its factorization.

990054009689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31281391.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The spelling of 990054009689 in words is "nine hundred ninety billion, fifty-four million, nine thousand, six hundred eighty-nine".