38009331 has 28 divisors (see below), whose sum is σ = 60359832. Its totient is φ = 23841216.

The previous prime is 38009327. The next prime is 38009333. The reversal of 38009331 is 13390083.

It is not a de Polignac number, because 38009331 - 2² = 38009327 is a prime.

It is a super-2 number, since 2×38009331² = 2889418486135122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 38009295 and 38009304.

It is not an unprimeable number, because it can be changed into a prime (38009333) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 10860 + ... + 13926.

Almost surely, 2^38009331 is an apocalyptic number.

38009331 is a deficient number, since it is larger than the sum of its proper divisors (22350501).

38009331 is an equidigital number, since it uses as much as digits as its factorization.

38009331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 38009331 is about 6165.1708005537. The cubic root of 38009331 is about 336.2250564914.

It can be divided in two parts, 3800 and 9331, that added together give a palindrome (13131).

The spelling of 38009331 in words is "thirty-eight million, nine thousand, three hundred thirty-one".