15674389 has 2 divisors, whose sum is σ = 15674390. Its totient is φ = 15674388.

The previous prime is 15674383. The next prime is 15674401. The reversal of 15674389 is 98347651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 736164 = 3865^2 + 858^2 .

It is an emirp because it is prime and its reverse (98347651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15674389 - 2³ = 15674381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15674381) 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, 7837194 + 7837195.

It is an arithmetic number, because the mean of its divisors is an integer number (7837195).

Almost surely, 2^15674389 is an apocalyptic number.

It is an amenable number.

15674389 is a deficient number, since it is larger than the sum of its proper divisors (1).

15674389 is an equidigital number, since it uses as much as digits as its factorization.

15674389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 15674389 is about 3959.0894155096. The cubic root of 15674389 is about 250.2631309512.

The spelling of 15674389 in words is "fifteen million, six hundred seventy-four thousand, three hundred eighty-nine".