3899965723 has 8 divisors (see below), whose sum is σ = 4040820288. Its totient is φ = 3760977024.

The previous prime is 3899965709. The next prime is 3899965739. The reversal of 3899965723 is 3275699983.

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

It is a cyclic number.

It is not a de Polignac number, because 3899965723 - 2¹⁷ = 3899834651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3899965703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462211 + ... + 470572.

It is an arithmetic number, because the mean of its divisors is an integer number (505102536).

Almost surely, 2^3899965723 is an apocalyptic number.

3899965723 is a deficient number, since it is larger than the sum of its proper divisors (140854565).

3899965723 is a wasteful number, since it uses less digits than its factorization.

3899965723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932933.

The product of its digits is 22044960, while the sum is 61.

The square root of 3899965723 is about 62449.7055477446. The cubic root of 3899965723 is about 1574.0563051576.

The spelling of 3899965723 in words is "three billion, eight hundred ninety-nine million, nine hundred sixty-five thousand, seven hundred twenty-three".