3997911238 has 8 divisors (see below), whose sum is σ = 6027939288. Its totient is φ = 1988598144.

The previous prime is 3997911173. The next prime is 3997911257. The reversal of 3997911238 is 8321197993.

3997911238 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5178256 + ... + 5179027.

It is an arithmetic number, because the mean of its divisors is an integer number (753492411).

Almost surely, 2^3997911238 is an apocalyptic number.

3997911238 is a deficient number, since it is larger than the sum of its proper divisors (2030028050).

3997911238 is a wasteful number, since it uses less digits than its factorization.

3997911238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357478.

The product of its digits is 734832, while the sum is 52.

The square root of 3997911238 is about 63229.0379335318. The cubic root of 3997911238 is about 1587.1246952760.

The spelling of 3997911238 in words is "three billion, nine hundred ninety-seven million, nine hundred eleven thousand, two hundred thirty-eight".