3899431 has 4 divisors (see below), whose sum is σ = 3928032. Its totient is φ = 3870832.

The previous prime is 3899429. The next prime is 3899453. The reversal of 3899431 is 1349983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1349983 = 67 ⋅20149.

It is a cyclic number.

It is not a de Polignac number, because 3899431 - 2¹ = 3899429 is a prime.

It is a super-2 number, since 2×3899431² = 30411124247522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

3899431 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899411) 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, 14095 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (982008).

Almost surely, 2^3899431 is an apocalyptic number.

3899431 is a deficient number, since it is larger than the sum of its proper divisors (28601).

3899431 is a wasteful number, since it uses less digits than its factorization.

3899431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600.

The product of its digits is 23328, while the sum is 37.

The square root of 3899431 is about 1974.6976983832. The cubic root of 3899431 is about 157.3984362424.

The spelling of 3899431 in words is "three million, eight hundred ninety-nine thousand, four hundred thirty-one".