333906989 has 12 divisors (see below), whose sum is σ = 362605716. Its totient is φ = 307337472.

The previous prime is 333906973. The next prime is 333907001. The reversal of 333906989 is 989609333.

It can be written as a sum of positive squares in 6 ways, for example, as 12888100 + 321018889 = 3590^2 + 17917^2 .

It is not a de Polignac number, because 333906989 - 2⁴ = 333906973 is a prime.

It is a super-2 number, since 2×333906989² = 222987754606092242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333906919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60389 + ... + 65685.

It is an arithmetic number, because the mean of its divisors is an integer number (30217143).

Almost surely, 2^333906989 is an apocalyptic number.

It is an amenable number.

333906989 is a deficient number, since it is larger than the sum of its proper divisors (28698727).

333906989 is a wasteful number, since it uses less digits than its factorization.

333906989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5696 (or 5683 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 333906989 is about 18273.1220375720. The cubic root of 333906989 is about 693.7587970207.

The spelling of 333906989 in words is "three hundred thirty-three million, nine hundred six thousand, nine hundred eighty-nine".