3899937 has 4 divisors (see below), whose sum is σ = 5199920. Its totient is φ = 2599956.

The previous prime is 3899927. The next prime is 3899941. The reversal of 3899937 is 7399983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7399983 = 3 ⋅2466661.

It is not a de Polignac number, because 3899937 - 2⁷ = 3899809 is a prime.

It is a D-number.

It is a Duffinian number.

3899937 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3899927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649987 + ... + 649992.

It is an arithmetic number, because the mean of its divisors is an integer number (1299980).

Almost surely, 2^3899937 is an apocalyptic number.

It is an amenable number.

3899937 is a deficient number, since it is larger than the sum of its proper divisors (1299983).

3899937 is a wasteful number, since it uses less digits than its factorization.

3899937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299982.

The product of its digits is 367416, while the sum is 48.

The square root of 3899937 is about 1974.8258151037. The cubic root of 3899937 is about 157.4052440873.

The spelling of 3899937 in words is "three million, eight hundred ninety-nine thousand, nine hundred thirty-seven".