3997722 has 32 divisors (see below), whose sum is σ = 8501760. Its totient is φ = 1250480.

The previous prime is 3997673. The next prime is 3997723. The reversal of 3997722 is 2277993.

It is not an unprimeable number, because it can be changed into a prime (3997723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7897 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (265680).

Almost surely, 2^3997722 is an apocalyptic number.

3997722 is an abundant number, since it is smaller than the sum of its proper divisors (4504038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3997722 is a wasteful number, since it uses less digits than its factorization.

3997722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its digits is 47628, while the sum is 39.

The square root of 3997722 is about 1999.4304188943. The cubic root of 3997722 is about 158.7099653112.

The spelling of 3997722 in words is "three million, nine hundred ninety-seven thousand, seven hundred twenty-two".