38989938 has 32 divisors (see below), whose sum is σ = 88401600. Its totient is φ = 11365056.

The previous prime is 38989933. The next prime is 38989943. The reversal of 38989938 is 83998983.

It is an interprime number because it is at equal distance from previous prime (38989933) and next prime (38989943).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38989933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11673 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (2762550).

Almost surely, 2^38989938 is an apocalyptic number.

38989938 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38989938 is an abundant number, since it is smaller than the sum of its proper divisors (49411662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38989938 is a wasteful number, since it uses less digits than its factorization.

38989938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26346.

The product of its digits is 3359232, while the sum is 57.

The square root of 38989938 is about 6244.1923416884. The cubic root of 38989938 is about 339.0919773745.

The spelling of 38989938 in words is "thirty-eight million, nine hundred eighty-nine thousand, nine hundred thirty-eight".