39937889 has 8 divisors (see below), whose sum is σ = 41303808. Its totient is φ = 38576880.

The previous prime is 39937853. The next prime is 39937967. The reversal of 39937889 is 98873993.

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 39937889 - 2⁸ = 39937633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39937819) 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, 23579 + ... + 25215.

It is an arithmetic number, because the mean of its divisors is an integer number (5162976).

Almost surely, 2^39937889 is an apocalyptic number.

It is an amenable number.

39937889 is a deficient number, since it is larger than the sum of its proper divisors (1365919).

39937889 is a wasteful number, since it uses less digits than its factorization.

39937889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its digits is 2939328, while the sum is 56.

The square root of 39937889 is about 6319.6431070117. The cubic root of 39937889 is about 341.8180837753.

The spelling of 39937889 in words is "thirty-nine million, nine hundred thirty-seven thousand, eight hundred eighty-nine".