990389153 has 16 divisors (see below), whose sum is σ = 1108017792. Its totient is φ = 879312000.

The previous prime is 990389149. The next prime is 990389171. The reversal of 990389153 is 351983099.

It is a cyclic number.

It is not a de Polignac number, because 990389153 - 2² = 990389149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990389098 and 990389107.

It is not an unprimeable number, because it can be changed into a prime (990383153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24758 + ... + 50928.

It is an arithmetic number, because the mean of its divisors is an integer number (69251112).

Almost surely, 2^990389153 is an apocalyptic number.

It is an amenable number.

990389153 is a deficient number, since it is larger than the sum of its proper divisors (117628639).

990389153 is a wasteful number, since it uses less digits than its factorization.

990389153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26296.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 990389153 is about 31470.4488846283. The cubic root of 990389153 is about 996.7860660277.

The spelling of 990389153 in words is "nine hundred ninety million, three hundred eighty-nine thousand, one hundred fifty-three".