38943894 has 64 divisors (see below), whose sum is σ = 88231680. Its totient is φ = 11358720.

The previous prime is 38943887. The next prime is 38943941. The reversal of 38943894 is 49834983.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284194 + ... + 284330.

It is an arithmetic number, because the mean of its divisors is an integer number (1378620).

Almost surely, 2^38943894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38943894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44115840).

38943894 is an abundant number, since it is smaller than the sum of its proper divisors (49287786).

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

38943894 is a wasteful number, since it uses less digits than its factorization.

38943894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

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

The square root of 38943894 is about 6240.5043065445. The cubic root of 38943894 is about 338.9584446239.

The spelling of 38943894 in words is "thirty-eight million, nine hundred forty-three thousand, eight hundred ninety-four".