39944329 has 2 divisors, whose sum is σ = 39944330. Its totient is φ = 39944328.

The previous prime is 39944321. The next prime is 39944341. The reversal of 39944329 is 92344993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22705225 + 17239104 = 4765^2 + 4152^2 .

It is a cyclic number.

It is not a de Polignac number, because 39944329 - 2³ = 39944321 is a prime.

It is not a weakly prime, because it can be changed into another prime (39944321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19972164 + 19972165.

It is an arithmetic number, because the mean of its divisors is an integer number (19972165).

Almost surely, 2^39944329 is an apocalyptic number.

It is an amenable number.

39944329 is a deficient number, since it is larger than the sum of its proper divisors (1).

39944329 is an equidigital number, since it uses as much as digits as its factorization.

39944329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 39944329 is about 6320.1526089170. The cubic root of 39944329 is about 341.8364555538.

The spelling of 39944329 in words is "thirty-nine million, nine hundred forty-four thousand, three hundred twenty-nine".