38733889 has 4 divisors (see below), whose sum is σ = 39678660. Its totient is φ = 37789120.

The previous prime is 38733887. The next prime is 38733899. The reversal of 38733889 is 98833783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 33258289 = 2340^2 + 5767^2 .

It is a cyclic number.

It is not a de Polignac number, because 38733889 - 2¹ = 38733887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38733881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472324 + ... + 472405.

It is an arithmetic number, because the mean of its divisors is an integer number (9919665).

Almost surely, 2^38733889 is an apocalyptic number.

It is an amenable number.

38733889 is a deficient number, since it is larger than the sum of its proper divisors (944771).

38733889 is an equidigital number, since it uses as much as digits as its factorization.

38733889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944770.

The product of its digits is 870912, while the sum is 49.

The square root of 38733889 is about 6223.6555977978. The cubic root of 38733889 is about 338.3480681998.

The spelling of 38733889 in words is "thirty-eight million, seven hundred thirty-three thousand, eight hundred eighty-nine".