38717889 has 12 divisors (see below), whose sum is σ = 60052464. Its totient is φ = 22124424.

The previous prime is 38717869. The next prime is 38717897. The reversal of 38717889 is 98871783.

It is not a de Polignac number, because 38717889 - 2¹² = 38713793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38717849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131547 + ... + 131840.

It is an arithmetic number, because the mean of its divisors is an integer number (5004372).

Almost surely, 2^38717889 is an apocalyptic number.

It is an amenable number.

38717889 is a deficient number, since it is larger than the sum of its proper divisors (21334575).

38717889 is a wasteful number, since it uses less digits than its factorization.

38717889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263404 (or 263397 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The square root of 38717889 is about 6222.3700468551. The cubic root of 38717889 is about 338.3014740776.

The spelling of 38717889 in words is "thirty-eight million, seven hundred seventeen thousand, eight hundred eighty-nine".