222693397 has 4 divisors (see below), whose sum is σ = 225195660. Its totient is φ = 220191136.

The previous prime is 222693391. The next prime is 222693403. The reversal of 222693397 is 793396222.

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 (222693391) and next prime (222693403).

It can be written as a sum of positive squares in 2 ways, for example, as 55741156 + 166952241 = 7466^2 + 12921^2 .

It is a cyclic number.

It is not a de Polignac number, because 222693397 - 2³ = 222693389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222693391) 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, 1250998 + ... + 1251175.

It is an arithmetic number, because the mean of its divisors is an integer number (56298915).

Almost surely, 2^222693397 is an apocalyptic number.

It is an amenable number.

222693397 is a deficient number, since it is larger than the sum of its proper divisors (2502263).

222693397 is an equidigital number, since it uses as much as digits as its factorization.

222693397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502262.

The product of its digits is 244944, while the sum is 43.

The square root of 222693397 is about 14922.9151642700. The cubic root of 222693397 is about 606.1346527707.

The spelling of 222693397 in words is "two hundred twenty-two million, six hundred ninety-three thousand, three hundred ninety-seven".