38998837 has 4 divisors (see below), whose sum is σ = 40256896. Its totient is φ = 37740780.

The previous prime is 38998801. The next prime is 38998847. The reversal of 38998837 is 73889983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38998837 - 2⁷ = 38998709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38998847) 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, 628983 + ... + 629044.

It is an arithmetic number, because the mean of its divisors is an integer number (10064224).

Almost surely, 2^38998837 is an apocalyptic number.

It is an amenable number.

38998837 is a deficient number, since it is larger than the sum of its proper divisors (1258059).

38998837 is a wasteful number, since it uses less digits than its factorization.

38998837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258058.

The product of its digits is 2612736, while the sum is 55.

The square root of 38998837 is about 6244.9048831828. The cubic root of 38998837 is about 339.1177733458.

The spelling of 38998837 in words is "thirty-eight million, nine hundred ninety-eight thousand, eight hundred thirty-seven".