3139812 has 36 divisors (see below), whose sum is σ = 8548540. Its totient is φ = 965952.

The previous prime is 3139811. The next prime is 3139813. The reversal of 3139812 is 2189313.

It is an interprime number because it is at equal distance from previous prime (3139811) and next prime (3139813).

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 1920996 = 1104^2 + 1386^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (3139811) 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 11 ways as a sum of consecutive naturals, for example, 2887 + ... + 3822.

Almost surely, 2^3139812 is an apocalyptic number.

It is an amenable number.

3139812 is an abundant number, since it is smaller than the sum of its proper divisors (5408728).

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

3139812 is a wasteful number, since it uses less digits than its factorization.

3139812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732 (or 6727 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 3139812 is about 1771.9514666040. The cubic root of 3139812 is about 146.4315125213.

The spelling of 3139812 in words is "three million, one hundred thirty-nine thousand, eight hundred twelve".