39846404249 has 16 divisors (see below), whose sum is σ = 43307374080. Its totient is φ = 36522420480.

The previous prime is 39846404203. The next prime is 39846404251. The reversal of 39846404249 is 94240464893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39846404249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39846404249.

It is not an unprimeable number, because it can be changed into a prime (39846404749) 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, 3904097 + ... + 3914289.

It is an arithmetic number, because the mean of its divisors is an integer number (2706710880).

Almost surely, 2^39846404249 is an apocalyptic number.

It is an amenable number.

39846404249 is a deficient number, since it is larger than the sum of its proper divisors (3460969831).

39846404249 is a wasteful number, since it uses less digits than its factorization.

39846404249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16880.

The product of its (nonzero) digits is 5971968, while the sum is 53.

The spelling of 39846404249 in words is "thirty-nine billion, eight hundred forty-six million, four hundred four thousand, two hundred forty-nine".