331466989 has 16 divisors (see below), whose sum is σ = 400550400. Its totient is φ = 267951024.

The previous prime is 331466981. The next prime is 331466999. The reversal of 331466989 is 989664133.

It is a cyclic number.

It is not a de Polignac number, because 331466989 - 2³ = 331466981 is a prime.

It is a super-2 number, since 2×331466989² = 219740729593452242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331466981) 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, 24702 + ... + 35680.

It is an arithmetic number, because the mean of its divisors is an integer number (25034400).

Almost surely, 2^331466989 is an apocalyptic number.

It is an amenable number.

331466989 is a deficient number, since it is larger than the sum of its proper divisors (69083411).

331466989 is a wasteful number, since it uses less digits than its factorization.

331466989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11232.

The product of its digits is 839808, while the sum is 49.

The square root of 331466989 is about 18206.2348935742. The cubic root of 331466989 is about 692.0648007801.

The spelling of 331466989 in words is "three hundred thirty-one million, four hundred sixty-six thousand, nine hundred eighty-nine".