39494743 has 8 divisors (see below), whose sum is σ = 40085136. Its totient is φ = 38908800.

The previous prime is 39494731. The next prime is 39494747. The reversal of 39494743 is 34749493.

39494743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39494743 is a prime.

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 39494743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39494747) 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 7 ways as a sum of consecutive naturals, for example, 19488 + ... + 21418.

It is an arithmetic number, because the mean of its divisors is an integer number (5010642).

Almost surely, 2^39494743 is an apocalyptic number.

39494743 is a deficient number, since it is larger than the sum of its proper divisors (590393).

39494743 is a wasteful number, since it uses less digits than its factorization.

39494743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its digits is 326592, while the sum is 43.

The square root of 39494743 is about 6284.4843066078. The cubic root of 39494743 is about 340.5491213077.

The spelling of 39494743 in words is "thirty-nine million, four hundred ninety-four thousand, seven hundred forty-three".