222994489 has 9 divisors (see below), whose sum is σ = 226713837. Its totient is φ = 219335904.

The previous prime is 222994477. The next prime is 222994537. The reversal of 222994489 is 984499222.

The square root of 222994489 is 14933.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 18275625 + 204718864 = 4275^2 + 14308^2 .

It is not a de Polignac number, because 222994489 - 2⁹ = 222993977 is a prime.

It is a super-3 number, since 3×222994489³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222995489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1627629 + ... + 1627765.

Almost surely, 2^222994489 is an apocalyptic number.

222994489 is the 14933-rd square number.

222994489 is the 7467-th centered octagonal number.

It is an amenable number.

222994489 is a deficient number, since it is larger than the sum of its proper divisors (3719348).

222994489 is an frugal number, since it uses more digits than its factorization.

222994489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 246 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The cubic root of 222994489 is about 606.4077039830.

Multiplying 222994489 by its sum of digits (49), we get a square (10926729961 = 104531²).

Multiplying 222994489 by its product of digits (746496), we get a square (166464494060544 = 12902112²).

The spelling of 222994489 in words is "two hundred twenty-two million, nine hundred ninety-four thousand, four hundred eighty-nine".