3139919 has 2 divisors, whose sum is σ = 3139920. Its totient is φ = 3139918.

The previous prime is 3139909. The next prime is 3139943. The reversal of 3139919 is 9199313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3139919 - 2⁸ = 3139663 is a prime.

It is a super-2 number, since 2×3139919² = 19718182653122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3139909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569959 + 1569960.

It is an arithmetic number, because the mean of its divisors is an integer number (1569960).

Almost surely, 2^3139919 is an apocalyptic number.

3139919 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139919 is an equidigital number, since it uses as much as digits as its factorization.

3139919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561, while the sum is 35.

The square root of 3139919 is about 1771.9816590473. The cubic root of 3139919 is about 146.4331758899.

The spelling of 3139919 in words is "three million, one hundred thirty-nine thousand, nine hundred nineteen".