3972977 has 4 divisors (see below), whose sum is σ = 3982836. Its totient is φ = 3963120.

The previous prime is 3972973. The next prime is 3972979. The reversal of 3972977 is 7792793.

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

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 3182656 = 889^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 3972977 - 2² = 3972973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3972973) 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, 4298 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (995709).

Almost surely, 2^3972977 is an apocalyptic number.

It is an amenable number.

3972977 is a deficient number, since it is larger than the sum of its proper divisors (9859).

3972977 is an equidigital number, since it uses as much as digits as its factorization.

3972977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9858.

The product of its digits is 166698, while the sum is 44.

The square root of 3972977 is about 1993.2328012553. The cubic root of 3972977 is about 158.3818276818.

The spelling of 3972977 in words is "three million, nine hundred seventy-two thousand, nine hundred seventy-seven".