39449881 has 8 divisors (see below), whose sum is σ = 40601024. Its totient is φ = 38303280.

The previous prime is 39449863. The next prime is 39449897. The reversal of 39449881 is 18894493.

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 39449881 - 2⁵ = 39449849 is a prime.

It is a super-2 number, since 2×39449881² = 3112586221828322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39449821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24796 + ... + 26338.

It is an arithmetic number, because the mean of its divisors is an integer number (5075128).

Almost surely, 2^39449881 is an apocalyptic number.

It is an amenable number.

39449881 is a deficient number, since it is larger than the sum of its proper divisors (1151143).

39449881 is a wasteful number, since it uses less digits than its factorization.

39449881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

The product of its digits is 248832, while the sum is 46.

The square root of 39449881 is about 6280.9140258405. The cubic root of 39449881 is about 340.4201294317.

The spelling of 39449881 in words is "thirty-nine million, four hundred forty-nine thousand, eight hundred eighty-one".