38173889 has 12 divisors (see below), whose sum is σ = 42767100. Its totient is φ = 34017984.

The previous prime is 38173879. The next prime is 38173897. The reversal of 38173889 is 98837183.

It can be written as a sum of positive squares in 6 ways, for example, as 4068289 + 34105600 = 2017^2 + 5840^2 .

It is not a de Polignac number, because 38173889 - 2¹² = 38169793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38173879) 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, 1007 + ... + 8795.

It is an arithmetic number, because the mean of its divisors is an integer number (3563925).

Almost surely, 2^38173889 is an apocalyptic number.

It is an amenable number.

38173889 is a deficient number, since it is larger than the sum of its proper divisors (4593211).

38173889 is a wasteful number, since it uses less digits than its factorization.

38173889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844 (or 7831 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 38173889 is about 6178.5021647645. The cubic root of 38173889 is about 336.7095767067.

The spelling of 38173889 in words is "thirty-eight million, one hundred seventy-three thousand, eight hundred eighty-nine".