39980845 has 8 divisors (see below), whose sum is σ = 50502240. Its totient is φ = 30301200.

The previous prime is 39980839. The next prime is 39980887. The reversal of 39980845 is 54808993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39980845 - 2⁵ = 39980813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39980795 and 39980804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210331 + ... + 210520.

It is an arithmetic number, because the mean of its divisors is an integer number (6312780).

Almost surely, 2^39980845 is an apocalyptic number.

It is an amenable number.

39980845 is a deficient number, since it is larger than the sum of its proper divisors (10521395).

39980845 is a wasteful number, since it uses less digits than its factorization.

39980845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420875.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 39980845 is about 6323.0408032844. The cubic root of 39980845 is about 341.9405896368.

The spelling of 39980845 in words is "thirty-nine million, nine hundred eighty thousand, eight hundred forty-five".