7389913 has 2 divisors, whose sum is σ = 7389914. Its totient is φ = 7389912.

The previous prime is 7389901. The next prime is 7389929. The reversal of 7389913 is 3199837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7354944 + 34969 = 2712^2 + 187^2 .

It is an emirp because it is prime and its reverse (3199837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7389913 - 2⁹ = 7389401 is a prime.

It is a super-2 number, since 2×7389913² = 109221628295138, which contains 22 as substring.

7389913 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7389013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3694956 + 3694957.

It is an arithmetic number, because the mean of its divisors is an integer number (3694957).

Almost surely, 2^7389913 is an apocalyptic number.

It is an amenable number.

7389913 is a deficient number, since it is larger than the sum of its proper divisors (1).

7389913 is an equidigital number, since it uses as much as digits as its factorization.

7389913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 7389913 is about 2718.4394420329. The cubic root of 7389913 is about 194.7809330368.

The spelling of 7389913 in words is "seven million, three hundred eighty-nine thousand, nine hundred thirteen".