15338989 has 2 divisors, whose sum is σ = 15338990. Its totient is φ = 15338988.

The previous prime is 15338977. The next prime is 15339013. The reversal of 15338989 is 98983351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13213225 + 2125764 = 3635^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 15338989 - 2²³ = 6950381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15330989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7669494 + 7669495.

It is an arithmetic number, because the mean of its divisors is an integer number (7669495).

Almost surely, 2^15338989 is an apocalyptic number.

It is an amenable number.

15338989 is a deficient number, since it is larger than the sum of its proper divisors (1).

15338989 is an equidigital number, since it uses as much as digits as its factorization.

15338989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 15338989 is about 3916.5021383883. The cubic root of 15338989 is about 248.4652048979.

The spelling of 15338989 in words is "fifteen million, three hundred thirty-eight thousand, nine hundred eighty-nine".