222390937 has 4 divisors (see below), whose sum is σ = 230059620. Its totient is φ = 214722256.

The previous prime is 222390907. The next prime is 222390967. The reversal of 222390937 is 739093222.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (222390907) and next prime (222390967).

It can be written as a sum of positive squares in 2 ways, for example, as 96412761 + 125978176 = 9819^2 + 11224^2 .

It is a cyclic number.

It is not a de Polignac number, because 222390937 - 2²⁷ = 88173209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222390896 and 222390905.

It is not an unprimeable number, because it can be changed into a prime (222390907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834298 + ... + 3834355.

It is an arithmetic number, because the mean of its divisors is an integer number (57514905).

Almost surely, 2^222390937 is an apocalyptic number.

It is an amenable number.

222390937 is a deficient number, since it is larger than the sum of its proper divisors (7668683).

222390937 is an equidigital number, since it uses as much as digits as its factorization.

222390937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668682.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 222390937 is about 14912.7776420089. Note that the first 3 decimals coincide. The cubic root of 222390937 is about 605.8601130494.

The spelling of 222390937 in words is "two hundred twenty-two million, three hundred ninety thousand, nine hundred thirty-seven".