3145739 has 2 divisors, whose sum is σ = 3145740. Its totient is φ = 3145738.

The previous prime is 3145721. The next prime is 3145741. The reversal of 3145739 is 9375413.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3145739 - 2¹² = 3141643 is a prime.

It is a super-2 number, since 2×3145739² = 19791347712242, which contains 22 as substring.

Together with 3145741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3145339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572869 + 1572870.

It is an arithmetic number, because the mean of its divisors is an integer number (1572870).

Almost surely, 2^3145739 is an apocalyptic number.

3145739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145739 is an equidigital number, since it uses as much as digits as its factorization.

3145739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 3145739 is about 1773.6231279502. The cubic root of 3145739 is about 146.5235938346.

The spelling of 3145739 in words is "three million, one hundred forty-five thousand, seven hundred thirty-nine".