3975977 has 4 divisors (see below), whose sum is σ = 4209876. Its totient is φ = 3742080.

The previous prime is 3975971. The next prime is 3976001. The reversal of 3975977 is 7795793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7795793 = 97 ⋅80369.

It can be written as a sum of positive squares in 2 ways, for example, as 3463321 + 512656 = 1861^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975977 - 2⁸ = 3975721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3975971) 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, 116924 + ... + 116957.

It is an arithmetic number, because the mean of its divisors is an integer number (1052469).

Almost surely, 2^3975977 is an apocalyptic number.

It is an amenable number.

3975977 is a deficient number, since it is larger than the sum of its proper divisors (233899).

3975977 is a wasteful number, since it uses less digits than its factorization.

3975977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233898.

The product of its digits is 416745, while the sum is 47.

The square root of 3975977 is about 1993.9852055620. The cubic root of 3975977 is about 158.4216824254.

The spelling of 3975977 in words is "three million, nine hundred seventy-five thousand, nine hundred seventy-seven".