39221994 has 32 divisors (see below), whose sum is σ = 91840896. Its totient is φ = 10932480.

The previous prime is 39221993. The next prime is 39222011. The reversal of 39221994 is 49912293.

It is not an unprimeable number, because it can be changed into a prime (39221993) 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, 9667 + ... + 13110.

It is an arithmetic number, because the mean of its divisors is an integer number (2870028).

Almost surely, 2^39221994 is an apocalyptic number.

39221994 is an abundant number, since it is smaller than the sum of its proper divisors (52618902).

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

39221994 is a wasteful number, since it uses less digits than its factorization.

39221994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22830.

The product of its digits is 34992, while the sum is 39.

The square root of 39221994 is about 6262.7465220940. The cubic root of 39221994 is about 339.7633705302.

The spelling of 39221994 in words is "thirty-nine million, two hundred twenty-one thousand, nine hundred ninety-four".