3139864 has 64 divisors (see below), whose sum is σ = 7660800. Its totient is φ = 1171584.

The previous prime is 3139861. The next prime is 3139867. The reversal of 3139864 is 4689313.

It is an interprime number because it is at equal distance from previous prime (3139861) and next prime (3139867).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139861) 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, 13719 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

Almost surely, 2^3139864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3139864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3830400).

3139864 is an abundant number, since it is smaller than the sum of its proper divisors (4520936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3139864 is a wasteful number, since it uses less digits than its factorization.

3139864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 268 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 3139864 is about 1771.9661396313. The cubic root of 3139864 is about 146.4323208921.

The spelling of 3139864 in words is "three million, one hundred thirty-nine thousand, eight hundred sixty-four".