3999159 has 16 divisors (see below), whose sum is σ = 6008800. Its totient is φ = 2628288.

The previous prime is 3999143. The next prime is 3999161. The reversal of 3999159 is 9519993.

It is not a de Polignac number, because 3999159 - 2⁴ = 3999143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (375550).

Almost surely, 2^3999159 is an apocalyptic number.

3999159 is a deficient number, since it is larger than the sum of its proper divisors (2009641).

3999159 is a wasteful number, since it uses less digits than its factorization.

3999159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2105 counting only the distinct ones).

The product of its digits is 98415, while the sum is 45.

The square root of 3999159 is about 1999.7897389476. The cubic root of 3999159 is about 158.7289793813.

The spelling of 3999159 in words is "three million, nine hundred ninety-nine thousand, one hundred fifty-nine".