38399844 has 48 divisors (see below), whose sum is σ = 103943168. Its totient is φ = 10806048.

The previous prime is 38399843. The next prime is 38399849. The reversal of 38399844 is 44899383.

It is a junction number, because it is equal to n+sod(n) for n = 38399793 and 38399802.

It is not an unprimeable number, because it can be changed into a prime (38399843) 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, 2217 + ... + 9039.

Almost surely, 2^38399844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38399844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51971584).

38399844 is an abundant number, since it is smaller than the sum of its proper divisors (65543324).

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

38399844 is a wasteful number, since it uses less digits than its factorization.

38399844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904 (or 6902 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 38399844 is about 6196.7607667232. The cubic root of 38399844 is about 337.3726092607.

The spelling of 38399844 in words is "thirty-eight million, three hundred ninety-nine thousand, eight hundred forty-four".