56980989 has 40 divisors (see below), whose sum is σ = 93488472. Its totient is φ = 34369920.

The previous prime is 56980951. The next prime is 56981003. The reversal of 56980989 is 98908965.

It can be written as a sum of positive squares in 4 ways, for example, as 6812100 + 50168889 = 2610^2 + 7083^2 .

It is not a de Polignac number, because 56980989 - 2¹⁷ = 56849917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56980909) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55299 + ... + 56319.

Almost surely, 2^56980989 is an apocalyptic number.

It is an amenable number.

56980989 is a deficient number, since it is larger than the sum of its proper divisors (36507483).

56980989 is a wasteful number, since it uses less digits than its factorization.

56980989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 56980989 is about 7548.5752960410. The cubic root of 56980989 is about 384.8073224899.

The spelling of 56980989 in words is "fifty-six million, nine hundred eighty thousand, nine hundred eighty-nine".