398653222 has 16 divisors (see below), whose sum is σ = 652810752. Its totient is φ = 181075720.

The previous prime is 398653187. The next prime is 398653223. The reversal of 398653222 is 222356893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398653223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29103 + ... + 40549.

It is an arithmetic number, because the mean of its divisors is an integer number (40800672).

Almost surely, 2^398653222 is an apocalyptic number.

398653222 is a deficient number, since it is larger than the sum of its proper divisors (254157530).

398653222 is a wasteful number, since it uses less digits than its factorization.

398653222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043.

The product of its digits is 155520, while the sum is 40.

The square root of 398653222 is about 19966.3021613918. The cubic root of 398653222 is about 735.9784411514.

The spelling of 398653222 in words is "three hundred ninety-eight million, six hundred fifty-three thousand, two hundred twenty-two".