39949043 has 4 divisors (see below), whose sum is σ = 40012008. Its totient is φ = 39886080.

The previous prime is 39949033. The next prime is 39949057. The reversal of 39949043 is 34094993.

It is a happy number.

39949043 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 39949043 - 2⁴ = 39949027 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (39949033) 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, 30521 + ... + 31802.

It is an arithmetic number, because the mean of its divisors is an integer number (10003002).

Almost surely, 2^39949043 is an apocalyptic number.

39949043 is a deficient number, since it is larger than the sum of its proper divisors (62965).

39949043 is an equidigital number, since it uses as much as digits as its factorization.

39949043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62964.

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

The square root of 39949043 is about 6320.5255319475. The cubic root of 39949043 is about 341.8499022157.

The spelling of 39949043 in words is "thirty-nine million, nine hundred forty-nine thousand, forty-three".