39489793 has 16 divisors (see below), whose sum is σ = 49438080. Its totient is φ = 30756096.

The previous prime is 39489763. The next prime is 39489797. The reversal of 39489793 is 39798493.

It is a de Polignac number, because none of the positive numbers 2^k-39489793 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 39489793.

It is not an unprimeable number, because it can be changed into a prime (39489797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2271 + ... + 9172.

It is an arithmetic number, because the mean of its divisors is an integer number (3089880).

Almost surely, 2^39489793 is an apocalyptic number.

It is an amenable number.

39489793 is a deficient number, since it is larger than the sum of its proper divisors (9948287).

39489793 is a wasteful number, since it uses less digits than its factorization.

39489793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11496.

The product of its digits is 1469664, while the sum is 52.

The square root of 39489793 is about 6284.0904672037. The cubic root of 39489793 is about 340.5348933502.

The spelling of 39489793 in words is "thirty-nine million, four hundred eighty-nine thousand, seven hundred ninety-three".