39980061 has 24 divisors (see below), whose sum is σ = 65336544. Its totient is φ = 24228720.

The previous prime is 39980053. The next prime is 39980063. The reversal of 39980061 is 16008993.

It is not a de Polignac number, because 39980061 - 2³ = 39980053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39979998 and 39980025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39980063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4806 + ... + 10151.

It is an arithmetic number, because the mean of its divisors is an integer number (2722356).

Almost surely, 2^39980061 is an apocalyptic number.

It is an amenable number.

39980061 is a deficient number, since it is larger than the sum of its proper divisors (25356483).

39980061 is a wasteful number, since it uses less digits than its factorization.

39980061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14983 (or 14971 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 39980061 is about 6322.9788074926. The cubic root of 39980061 is about 341.9383545401.

It can be divided in two parts, 39 and 980061, that added together give a square (980100 = 990²).

The spelling of 39980061 in words is "thirty-nine million, nine hundred eighty thousand, sixty-one".