39993212 has 18 divisors (see below), whose sum is σ = 81415152. Its totient is φ = 17139864.

The previous prime is 39993211. The next prime is 39993221. The reversal of 39993212 is 21239993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39993211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101828 + ... + 102219.

It is an arithmetic number, because the mean of its divisors is an integer number (4523064).

Almost surely, 2^39993212 is an apocalyptic number.

It is an amenable number.

39993212 is an abundant number, since it is smaller than the sum of its proper divisors (41421940).

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

39993212 is a wasteful number, since it uses less digits than its factorization.

39993212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204065 (or 204056 counting only the distinct ones).

The product of its digits is 26244, while the sum is 38.

The square root of 39993212 is about 6324.0186590490. The cubic root of 39993212 is about 341.9758427130.

The spelling of 39993212 in words is "thirty-nine million, nine hundred ninety-three thousand, two hundred twelve".