222247397 has 4 divisors (see below), whose sum is σ = 222303840. Its totient is φ = 222190956.

The previous prime is 222247393. The next prime is 222247411. The reversal of 222247397 is 793742222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222247397 - 2² = 222247393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222247397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222247393) 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, 21833 + ... + 30350.

It is an arithmetic number, because the mean of its divisors is an integer number (55575960).

Almost surely, 2^222247397 is an apocalyptic number.

It is an amenable number.

222247397 is a deficient number, since it is larger than the sum of its proper divisors (56443).

222247397 is an equidigital number, since it uses as much as digits as its factorization.

222247397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56442.

The product of its digits is 84672, while the sum is 38.

The square root of 222247397 is about 14907.9642138020. The cubic root of 222247397 is about 605.7297362173.

The spelling of 222247397 in words is "two hundred twenty-two million, two hundred forty-seven thousand, three hundred ninety-seven".