39943922 has 18 divisors (see below), whose sum is σ = 61981479. Its totient is φ = 19306080.

The previous prime is 39943873. The next prime is 39943973. The reversal of 39943922 is 22934993.

It can be written as a sum of positive squares in 5 ways, for example, as 6754801 + 33189121 = 2599^2 + 5761^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4469.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39943922.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 366404 + ... + 366512.

Almost surely, 2^39943922 is an apocalyptic number.

39943922 is a deficient number, since it is larger than the sum of its proper divisors (22037557).

39943922 is an equidigital number, since it uses as much as digits as its factorization.

39943922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 152 counting only the distinct ones).

The product of its digits is 104976, while the sum is 41.

The square root of 39943922 is about 6320.1204102454. The cubic root of 39943922 is about 341.8352945386.

The spelling of 39943922 in words is "thirty-nine million, nine hundred forty-three thousand, nine hundred twenty-two".