39386889 has 6 divisors (see below), whose sum is σ = 56892186. Its totient is φ = 26257920.

The previous prime is 39386887. The next prime is 39386911. The reversal of 39386889 is 98868393.

It can be written as a sum of positive squares in only one way, i.e., 24176889 + 15210000 = 4917^2 + 3900^2 .

It is not a de Polignac number, because 39386889 - 2¹ = 39386887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39386881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2188152 + ... + 2188169.

It is an arithmetic number, because the mean of its divisors is an integer number (9482031).

Almost surely, 2^39386889 is an apocalyptic number.

It is an amenable number.

39386889 is a deficient number, since it is larger than the sum of its proper divisors (17505297).

39386889 is a wasteful number, since it uses less digits than its factorization.

39386889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376327 (or 4376324 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 39386889 is about 6275.8974657016. The cubic root of 39386889 is about 340.2388431356.

The spelling of 39386889 in words is "thirty-nine million, three hundred eighty-six thousand, eight hundred eighty-nine".