38928569 has 2 divisors, whose sum is σ = 38928570. Its totient is φ = 38928568.

The previous prime is 38928563. The next prime is 38928583. The reversal of 38928569 is 96582983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 17952169 = 4580^2 + 4237^2 .

It is a cyclic number.

It is not a de Polignac number, because 38928569 - 2⁸ = 38928313 is a prime.

It is a super-2 number, since 2×38928569² = 3030866968775522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38928563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19464284 + 19464285.

It is an arithmetic number, because the mean of its divisors is an integer number (19464285).

Almost surely, 2^38928569 is an apocalyptic number.

It is an amenable number.

38928569 is a deficient number, since it is larger than the sum of its proper divisors (1).

38928569 is an equidigital number, since it uses as much as digits as its factorization.

38928569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 38928569 is about 6239.2763202154. The cubic root of 38928569 is about 338.9139770651.

The spelling of 38928569 in words is "thirty-eight million, nine hundred twenty-eight thousand, five hundred sixty-nine".