4007722 has 4 divisors (see below), whose sum is σ = 6011586. Its totient is φ = 2003860.

The previous prime is 4007687. The next prime is 4007723. The reversal of 4007722 is 2277004.

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

It can be written as a sum of positive squares in only one way, i.e., 4004001 + 3721 = 2001^2 + 61^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

4007722 is a modest number, since divided by 7722 gives 4 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 4007693 and 4007702.

It is not an unprimeable number, because it can be changed into a prime (4007723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001929 + ... + 1001932.

Almost surely, 2^4007722 is an apocalyptic number.

4007722 is a deficient number, since it is larger than the sum of its proper divisors (2003864).

4007722 is a wasteful number, since it uses less digits than its factorization.

4007722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003863.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 4007722 is about 2001.9295691907. The cubic root of 4007722 is about 158.8421887919.

The spelling of 4007722 in words is "four million, seven thousand, seven hundred twenty-two".