22277449 has 4 divisors (see below), whose sum is σ = 22545936. Its totient is φ = 22008964.

The previous prime is 22277413. The next prime is 22277459. The reversal of 22277449 is 94477222.

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 22277449 - 2¹¹ = 22275401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22277459) 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, 134119 + ... + 134284.

It is an arithmetic number, because the mean of its divisors is an integer number (5636484).

Almost surely, 2^22277449 is an apocalyptic number.

It is an amenable number.

22277449 is a deficient number, since it is larger than the sum of its proper divisors (268487).

22277449 is an equidigital number, since it uses as much as digits as its factorization.

22277449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268486.

The product of its digits is 56448, while the sum is 37.

The square root of 22277449 is about 4719.8992573995. The cubic root of 22277449 is about 281.3769294400.

The spelling of 22277449 in words is "twenty-two million, two hundred seventy-seven thousand, four hundred forty-nine".