3938475722 has 4 divisors (see below), whose sum is σ = 5907713586. Its totient is φ = 1969237860.

The previous prime is 3938475721. The next prime is 3938475733. The reversal of 3938475722 is 2275748393.

It is a happy number.

3938475722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2275748393 = 409 ⋅5564177.

It can be written as a sum of positive squares in only one way, i.e., 3763945201 + 174530521 = 61351^2 + 13211^2 .

It is not an unprimeable number, because it can be changed into a prime (3938475721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984618929 + ... + 984618932.

Almost surely, 2^3938475722 is an apocalyptic number.

3938475722 is a deficient number, since it is larger than the sum of its proper divisors (1969237864).

3938475722 is a wasteful number, since it uses less digits than its factorization.

3938475722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969237863.

The product of its digits is 2540160, while the sum is 50.

The square root of 3938475722 is about 62757.2762474599. The cubic root of 3938475722 is about 1579.2203227373.

The spelling of 3938475722 in words is "three billion, nine hundred thirty-eight million, four hundred seventy-five thousand, seven hundred twenty-two".