38998 has 16 divisors (see below), whose sum is σ = 65664. Its totient is φ = 17280.

The previous prime is 38993. The next prime is 39019. The reversal of 38998 is 89983.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036 + ... + 1072.

It is an arithmetic number, because the mean of its divisors is an integer number (4104).

2³⁸⁹⁹⁸ is an apocalyptic number.

38998 is a deficient number, since it is larger than the sum of its proper divisors (26666).

38998 is a wasteful number, since it uses less digits than its factorization.

38998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87.

The product of its digits is 15552, while the sum is 37.

The square root of 38998 is about 197.4791128196. The cubic root of 38998 is about 33.9115347260.

The spelling of 38998 in words is "thirty-eight thousand, nine hundred ninety-eight".