3520739 has 2 divisors, whose sum is σ = 3520740. Its totient is φ = 3520738.

The previous prime is 3520733. The next prime is 3520787. The reversal of 3520739 is 9370253.

It is a weak prime.

It is an emirp because it is prime and its reverse (9370253) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3520739 - 2⁸ = 3520483 is a prime.

It is a super-2 number, since 2×3520739² = 24791206212242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3520733) 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 as a sum of consecutive naturals, namely, 1760369 + 1760370.

It is an arithmetic number, because the mean of its divisors is an integer number (1760370).

Almost surely, 2^3520739 is an apocalyptic number.

3520739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3520739 is an equidigital number, since it uses as much as digits as its factorization.

3520739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 3520739 is about 1876.3632377554. The cubic root of 3520739 is about 152.1287430714.

The spelling of 3520739 in words is "three million, five hundred twenty thousand, seven hundred thirty-nine".