39994368 has 88 divisors (see below), whose sum is σ = 109260672. Its totient is φ = 13000704.

The previous prime is 39994307. The next prime is 39994369. The reversal of 39994368 is 86349993.

It is a self number, because there is not a number n which added to its sum of digits gives 39994368.

It is not an unprimeable number, because it can be changed into a prime (39994369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144246 + ... + 144522.

Almost surely, 2^39994368 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 39994368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54630336).

39994368 is an abundant number, since it is smaller than the sum of its proper divisors (69266304).

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

39994368 is a wasteful number, since it uses less digits than its factorization.

39994368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 329 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 39994368 is about 6324.1100559683. The cubic root of 39994368 is about 341.9791376077.

The spelling of 39994368 in words is "thirty-nine million, nine hundred ninety-four thousand, three hundred sixty-eight".