3139689 has 16 divisors (see below), whose sum is σ = 4809728. Its totient is φ = 1784592.

The previous prime is 3139681. The next prime is 3139699. The reversal of 3139689 is 9869313.

It is not a de Polignac number, because 3139689 - 2³ = 3139681 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

3139689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3139681) 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, 6204 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (300608).

Almost surely, 2^3139689 is an apocalyptic number.

It is an amenable number.

3139689 is a deficient number, since it is larger than the sum of its proper divisors (1670039).

3139689 is a wasteful number, since it uses less digits than its factorization.

3139689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

The product of its digits is 34992, while the sum is 39.

The square root of 3139689 is about 1771.9167587672. The cubic root of 3139689 is about 146.4296003780.

It can be divided in two parts, 3139 and 689, that added together give a triangular number (3828 = T₈₇).

The spelling of 3139689 in words is "three million, one hundred thirty-nine thousand, six hundred eighty-nine".