3901397993 has 8 divisors (see below), whose sum is σ = 4012519560. Its totient is φ = 3790575360.

The previous prime is 3901397987. The next prime is 3901398077. The reversal of 3901397993 is 3997931093.

It can be written as a sum of positive squares in 4 ways, for example, as 85618009 + 3815779984 = 9253^2 + 61772^2 .

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-3901397993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3901397953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48128 + ... + 100593.

It is an arithmetic number, because the mean of its divisors is an integer number (501564945).

Almost surely, 2^3901397993 is an apocalyptic number.

It is an amenable number.

3901397993 is a deficient number, since it is larger than the sum of its proper divisors (111121567).

3901397993 is a wasteful number, since it uses less digits than its factorization.

3901397993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149467.

The product of its (nonzero) digits is 1240029, while the sum is 53.

The square root of 3901397993 is about 62461.1718830187. The cubic root of 3901397993 is about 1574.2489733205.

The spelling of 3901397993 in words is "three billion, nine hundred one million, three hundred ninety-seven thousand, nine hundred ninety-three".