3899231 has 4 divisors (see below), whose sum is σ = 4456272. Its totient is φ = 3342192.

The previous prime is 3899227. The next prime is 3899243. The reversal of 3899231 is 1329983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329983 = 61 ⋅21803.

It is not a de Polignac number, because 3899231 - 2² = 3899227 is a prime.

It is a super-2 number, since 2×3899231² = 30408004782722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3899191 and 3899200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899201) 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, 278510 + ... + 278523.

It is an arithmetic number, because the mean of its divisors is an integer number (1114068).

Almost surely, 2^3899231 is an apocalyptic number.

3899231 is a deficient number, since it is larger than the sum of its proper divisors (557041).

3899231 is an equidigital number, since it uses as much as digits as its factorization.

3899231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557040.

The product of its digits is 11664, while the sum is 35.

The square root of 3899231 is about 1974.6470570712. The cubic root of 3899231 is about 157.3957452323.

The spelling of 3899231 in words is "three million, eight hundred ninety-nine thousand, two hundred thirty-one".