222987473 has 2 divisors, whose sum is σ = 222987474. Its totient is φ = 222987472.

The previous prime is 222987469. The next prime is 222987503. The reversal of 222987473 is 374789222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205406224 + 17581249 = 14332^2 + 4193^2 .

It is a cyclic number.

It is not a de Polignac number, because 222987473 - 2² = 222987469 is a prime.

It is a super-2 number, since 2×222987473² = 99446826229851458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222987403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111493736 + 111493737.

It is an arithmetic number, because the mean of its divisors is an integer number (111493737).

Almost surely, 2^222987473 is an apocalyptic number.

It is an amenable number.

222987473 is a deficient number, since it is larger than the sum of its proper divisors (1).

222987473 is an equidigital number, since it uses as much as digits as its factorization.

222987473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 222987473 is about 14932.7650821943. The cubic root of 222987473 is about 606.4013441829.

The spelling of 222987473 in words is "two hundred twenty-two million, nine hundred eighty-seven thousand, four hundred seventy-three".