39964043 has 4 divisors (see below), whose sum is σ = 45673200. Its totient is φ = 34254888.

The previous prime is 39964027. The next prime is 39964073. The reversal of 39964043 is 34046993.

39964043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39964043 - 2⁴ = 39964027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39963988 and 39964006.

It is not an unprimeable number, because it can be changed into a prime (39964003) 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 3 ways as a sum of consecutive naturals, for example, 2854568 + ... + 2854581.

It is an arithmetic number, because the mean of its divisors is an integer number (11418300).

Almost surely, 2^39964043 is an apocalyptic number.

39964043 is a deficient number, since it is larger than the sum of its proper divisors (5709157).

39964043 is an equidigital number, since it uses as much as digits as its factorization.

39964043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709156.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 39964043 is about 6321.7120307714. The cubic root of 39964043 is about 341.8926826054.

The spelling of 39964043 in words is "thirty-nine million, nine hundred sixty-four thousand, forty-three".