3139687 has 4 divisors (see below), whose sum is σ = 3186616. Its totient is φ = 3092760.

The previous prime is 3139681. The next prime is 3139699. The reversal of 3139687 is 7869313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7869313 = 83 ⋅94811.

It is a cyclic number.

It is not a de Polignac number, because 3139687 - 2¹⁵ = 3106919 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 (3139681) 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, 23364 + ... + 23497.

It is an arithmetic number, because the mean of its divisors is an integer number (796654).

Almost surely, 2^3139687 is an apocalyptic number.

3139687 is a deficient number, since it is larger than the sum of its proper divisors (46929).

3139687 is an equidigital number, since it uses as much as digits as its factorization.

3139687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46928.

The product of its digits is 27216, while the sum is 37.

The square root of 3139687 is about 1771.9161944065. The cubic root of 3139687 is about 146.4295692859.

It can be divided in two parts, 313 and 9687, that added together give a 4-th power (10000 = 10⁴).

The spelling of 3139687 in words is "three million, one hundred thirty-nine thousand, six hundred eighty-seven".