331979644 has 6 divisors (see below), whose sum is σ = 580964384. Its totient is φ = 165989820.

The previous prime is 331979639. The next prime is 331979653. The reversal of 331979644 is 446979133.

It is a super-2 number, since 2×331979644² = 220420968060733472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331979594 and 331979603.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 41497452 + ... + 41497459.

Almost surely, 2^331979644 is an apocalyptic number.

It is an amenable number.

331979644 is a deficient number, since it is larger than the sum of its proper divisors (248984740).

331979644 is a wasteful number, since it uses less digits than its factorization.

331979644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82994915 (or 82994913 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The square root of 331979644 is about 18220.3085594070. The cubic root of 331979644 is about 692.4214051480.

The spelling of 331979644 in words is "three hundred thirty-one million, nine hundred seventy-nine thousand, six hundred forty-four".