357222989 has 4 divisors (see below), whose sum is σ = 378236124. Its totient is φ = 336209856.

The previous prime is 357222977. The next prime is 357222991. The reversal of 357222989 is 989222753.

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

It can be written as a sum of positive squares in 2 ways, for example, as 329712964 + 27510025 = 18158^2 + 5245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-357222989 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 (357222919) 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, 10506542 + ... + 10506575.

It is an arithmetic number, because the mean of its divisors is an integer number (94559031).

Almost surely, 2^357222989 is an apocalyptic number.

It is an amenable number.

357222989 is a deficient number, since it is larger than the sum of its proper divisors (21013135).

357222989 is a wasteful number, since it uses less digits than its factorization.

357222989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21013134.

The product of its digits is 544320, while the sum is 47.

The square root of 357222989 is about 18900.3436212149. The cubic root of 357222989 is about 709.5447647126.

The spelling of 357222989 in words is "three hundred fifty-seven million, two hundred twenty-two thousand, nine hundred eighty-nine".