3899091 has 16 divisors (see below), whose sum is σ = 6015744. Its totient is φ = 2200224.

The previous prime is 3899057. The next prime is 3899101. The reversal of 3899091 is 1909983.

It is not a de Polignac number, because 3899091 - 2¹⁸ = 3636947 is a prime.

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 (3899011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (375984).

Almost surely, 2^3899091 is an apocalyptic number.

3899091 is a deficient number, since it is larger than the sum of its proper divisors (2116653).

3899091 is a wasteful number, since it uses less digits than its factorization.

3899091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3899091 is about 1974.6116073800. The cubic root of 3899091 is about 157.3938614704.

The spelling of 3899091 in words is "three million, eight hundred ninety-nine thousand, ninety-one".