4091722 has 8 divisors (see below), whose sum is σ = 6150276. Its totient is φ = 2041632.

The previous prime is 4091693. The next prime is 4091729. The reversal of 4091722 is 2271904.

It can be written as a sum of positive squares in 2 ways, for example, as 3129361 + 962361 = 1769^2 + 981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4091729) 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, 723 + ... + 2950.

Almost surely, 2^4091722 is an apocalyptic number.

4091722 is a deficient number, since it is larger than the sum of its proper divisors (2058554).

4091722 is a wasteful number, since it uses less digits than its factorization.

4091722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 4091722 is about 2022.8005339133. The cubic root of 4091722 is about 159.9442774710.

The spelling of 4091722 in words is "four million, ninety-one thousand, seven hundred twenty-two".