222987957 has 4 divisors (see below), whose sum is σ = 297317280. Its totient is φ = 148658636.

The previous prime is 222987953. The next prime is 222987983. The reversal of 222987957 is 759789222.

222987957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222987957 - 2² = 222987953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222987953) 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, 37164657 + ... + 37164662.

It is an arithmetic number, because the mean of its divisors is an integer number (74329320).

Almost surely, 2^222987957 is an apocalyptic number.

It is an amenable number.

222987957 is a deficient number, since it is larger than the sum of its proper divisors (74329323).

222987957 is an equidigital number, since it uses as much as digits as its factorization.

222987957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74329322.

The product of its digits is 1270080, while the sum is 51.

The square root of 222987957 is about 14932.7812881593. The cubic root of 222987957 is about 606.4017829191.

The spelling of 222987957 in words is "two hundred twenty-two million, nine hundred eighty-seven thousand, nine hundred fifty-seven".