1722022249 has 4 divisors (see below), whose sum is σ = 1722169936. Its totient is φ = 1721874564.

The previous prime is 1722022243. The next prime is 1722022283. The reversal of 1722022249 is 9422202271.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1722022249 - 2³ = 1722022241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1722022249.

It is not an unprimeable number, because it can be changed into a prime (1722022241) 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, 54699 + ... + 80224.

It is an arithmetic number, because the mean of its divisors is an integer number (430542484).

Almost surely, 2^1722022249 is an apocalyptic number.

It is an amenable number.

1722022249 is a deficient number, since it is larger than the sum of its proper divisors (147687).

1722022249 is a wasteful number, since it uses less digits than its factorization.

1722022249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147686.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1722022249 is about 41497.2559213257. The cubic root of 1722022249 is about 1198.6146626584.

It can be divided in two parts, 1722022 and 249, that added together give a palindrome (1722271).

The spelling of 1722022249 in words is "one billion, seven hundred twenty-two million, twenty-two thousand, two hundred forty-nine".