39934561 has 8 divisors (see below), whose sum is σ = 42341600. Its totient is φ = 37558080.

The previous prime is 39934553. The next prime is 39934591. The reversal of 39934561 is 16543993.

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 39934561 - 2³ = 39934553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39934501) 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, 4920 + ... + 10201.

It is an arithmetic number, because the mean of its divisors is an integer number (5292700).

Almost surely, 2^39934561 is an apocalyptic number.

It is an amenable number.

39934561 is a deficient number, since it is larger than the sum of its proper divisors (2407039).

39934561 is a wasteful number, since it uses less digits than its factorization.

39934561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15279.

The product of its digits is 87480, while the sum is 40.

The square root of 39934561 is about 6319.3797955179. The cubic root of 39934561 is about 341.8085890139.

The spelling of 39934561 in words is "thirty-nine million, nine hundred thirty-four thousand, five hundred sixty-one".