39940443 has 12 divisors (see below), whose sum is σ = 60200400. Its totient is φ = 25469136.

The previous prime is 39940409. The next prime is 39940469. The reversal of 39940443 is 34404993.

39940443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39940443 - 2¹⁸ = 39678299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39940398 and 39940407.

It is not an unprimeable number, because it can be changed into a prime (39940403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96268 + ... + 96681.

It is an arithmetic number, because the mean of its divisors is an integer number (5016700).

Almost surely, 2^39940443 is an apocalyptic number.

39940443 is a deficient number, since it is larger than the sum of its proper divisors (20259957).

39940443 is a wasteful number, since it uses less digits than its factorization.

39940443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192978 (or 192975 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 39940443 is about 6319.8451721541. The cubic root of 39940443 is about 341.8253699622.

The spelling of 39940443 in words is "thirty-nine million, nine hundred forty thousand, four hundred forty-three".