3975967 has 4 divisors (see below), whose sum is σ = 4104256. Its totient is φ = 3847680.

The previous prime is 3975947. The next prime is 3975971. The reversal of 3975967 is 7695793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3975967 - 2¹¹ = 3973919 is a prime.

It is an Ulam number.

It is a Duffinian number.

3975967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64098 + ... + 64159.

It is an arithmetic number, because the mean of its divisors is an integer number (1026064).

Almost surely, 2^3975967 is an apocalyptic number.

3975967 is a deficient number, since it is larger than the sum of its proper divisors (128289).

3975967 is a wasteful number, since it uses less digits than its factorization.

3975967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128288.

The product of its digits is 357210, while the sum is 46.

The square root of 3975967 is about 1993.9826980192. The cubic root of 3975967 is about 158.4215496095.

The spelling of 3975967 in words is "three million, nine hundred seventy-five thousand, nine hundred sixty-seven".