222912769 has 16 divisors (see below), whose sum is σ = 238049280. Its totient is φ = 208144080.

The previous prime is 222912761. The next prime is 222912773. The reversal of 222912769 is 967219222.

It is a cyclic number.

It is not a de Polignac number, because 222912769 - 2³ = 222912761 is a prime.

It is a super-2 number, since 2×222912769² = 99380205166494722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222912761) 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, 516984 + ... + 517414.

It is an arithmetic number, because the mean of its divisors is an integer number (14878080).

Almost surely, 2^222912769 is an apocalyptic number.

It is an amenable number.

222912769 is a deficient number, since it is larger than the sum of its proper divisors (15136511).

222912769 is a wasteful number, since it uses less digits than its factorization.

222912769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 54432, while the sum is 40.

The square root of 222912769 is about 14930.2635274800. The cubic root of 222912769 is about 606.3336189050. Note that the first 3 decimals are identical.

The spelling of 222912769 in words is "two hundred twenty-two million, nine hundred twelve thousand, seven hundred sixty-nine".