3942397975 has 12 divisors (see below), whose sum is σ = 4968715960. Its totient is φ = 3102213600.

The previous prime is 3942397973. The next prime is 3942397997. The reversal of 3942397975 is 5797932493.

It is a happy number.

It is not a de Polignac number, because 3942397975 - 2¹ = 3942397973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942397973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1291065 + ... + 1294114.

Almost surely, 2^3942397975 is an apocalyptic number.

3942397975 is a deficient number, since it is larger than the sum of its proper divisors (1026317985).

3942397975 is a wasteful number, since it uses less digits than its factorization.

3942397975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585250 (or 2585245 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 58.

The square root of 3942397975 is about 62788.5178595577. The cubic root of 3942397975 is about 1579.7443872931.

The spelling of 3942397975 in words is "three billion, nine hundred forty-two million, three hundred ninety-seven thousand, nine hundred seventy-five".