39889395 has 128 divisors (see below), whose sum is σ = 92897280. Its totient is φ = 15759360.

The previous prime is 39889387. The next prime is 39889397. The reversal of 39889395 is 59398893.

39889395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39889395 - 2³ = 39889387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39889397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 208750 + ... + 208940.

It is an arithmetic number, because the mean of its divisors is an integer number (725760).

Almost surely, 2^39889395 is an apocalyptic number.

39889395 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

39889395 is the 5157-th pentagonal number.

39889395 is an abundant number, since it is smaller than the sum of its proper divisors (53007885).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39889395 is a wasteful number, since it uses less digits than its factorization.

39889395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 39889395 is about 6315.8051743226. The cubic root of 39889395 is about 341.6796785315.

The spelling of 39889395 in words is "thirty-nine million, eight hundred eighty-nine thousand, three hundred ninety-five".