38289889 has 12 divisors (see below), whose sum is σ = 43271280. Its totient is φ = 33600560.

The previous prime is 38289833. The next prime is 38289893. The reversal of 38289889 is 98898283.

It is not a de Polignac number, because 38289889 - 2²³ = 29901281 is a prime.

It is a super-2 number, since 2×38289889² = 2932231199264642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38289689) 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, 7182 + ... + 11320.

It is an arithmetic number, because the mean of its divisors is an integer number (3605940).

Almost surely, 2^38289889 is an apocalyptic number.

It is an amenable number.

38289889 is a deficient number, since it is larger than the sum of its proper divisors (4981391).

38289889 is a wasteful number, since it uses less digits than its factorization.

38289889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208 (or 4179 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 55.

The square root of 38289889 is about 6187.8824326259. The cubic root of 38289889 is about 337.0502879107.

The spelling of 38289889 in words is "thirty-eight million, two hundred eighty-nine thousand, eight hundred eighty-nine".