38989493 has 2 divisors, whose sum is σ = 38989494. Its totient is φ = 38989492.

The previous prime is 38989469. The next prime is 38989513. The reversal of 38989493 is 39498983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29398084 + 9591409 = 5422^2 + 3097^2 .

It is a cyclic number.

It is not a de Polignac number, because 38989493 - 2⁶ = 38989429 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 (38989793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19494746 + 19494747.

It is an arithmetic number, because the mean of its divisors is an integer number (19494747).

Almost surely, 2^38989493 is an apocalyptic number.

It is an amenable number.

38989493 is a deficient number, since it is larger than the sum of its proper divisors (1).

38989493 is an equidigital number, since it uses as much as digits as its factorization.

38989493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The square root of 38989493 is about 6244.1567084755. The cubic root of 38989493 is about 339.0906873280.

The spelling of 38989493 in words is "thirty-eight million, nine hundred eighty-nine thousand, four hundred ninety-three".