3899139 has 8 divisors (see below), whose sum is σ = 5221392. Its totient is φ = 2588160.

The previous prime is 3899131. The next prime is 3899143. The reversal of 3899139 is 9319983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3899139 - 2³ = 3899131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3899139.

It is not an unprimeable number, because it can be changed into a prime (3899131) 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, 1974 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (652674).

Almost surely, 2^3899139 is an apocalyptic number.

3899139 is a deficient number, since it is larger than the sum of its proper divisors (1322253).

3899139 is a wasteful number, since it uses less digits than its factorization.

3899139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637.

The product of its digits is 52488, while the sum is 42.

The square root of 3899139 is about 1974.6237616316. The cubic root of 3899139 is about 157.3945073367.

The spelling of 3899139 in words is "three million, eight hundred ninety-nine thousand, one hundred thirty-nine".