39980881 has 8 divisors (see below), whose sum is σ = 40737600. Its totient is φ = 39229680.

The previous prime is 39980839. The next prime is 39980887. The reversal of 39980881 is 18808993.

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

It is a cyclic number.

It is not a de Polignac number, because 39980881 - 2¹⁷ = 39849809 is a prime.

It is a super-2 number, since 2×39980881² = 3196941691072322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39980887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15030 + ... + 17488.

It is an arithmetic number, because the mean of its divisors is an integer number (5092200).

Almost surely, 2^39980881 is an apocalyptic number.

It is an amenable number.

39980881 is a deficient number, since it is larger than the sum of its proper divisors (756719).

39980881 is a wasteful number, since it uses less digits than its factorization.

39980881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 39980881 is about 6323.0436500154. The cubic root of 39980881 is about 341.9406922681.

The spelling of 39980881 in words is "thirty-nine million, nine hundred eighty thousand, eight hundred eighty-one".