398643358 has 16 divisors (see below), whose sum is σ = 602277120. Its totient is φ = 197888800.

The previous prime is 398643341. The next prime is 398643359. The reversal of 398643358 is 853346893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398643359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358908 + ... + 360016.

It is an arithmetic number, because the mean of its divisors is an integer number (37642320).

Almost surely, 2^398643358 is an apocalyptic number.

398643358 is a deficient number, since it is larger than the sum of its proper divisors (203633762).

398643358 is a wasteful number, since it uses less digits than its factorization.

398643358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243.

The product of its digits is 1866240, while the sum is 49.

The square root of 398643358 is about 19966.0551436682. The cubic root of 398643358 is about 735.9723709205.

The spelling of 398643358 in words is "three hundred ninety-eight million, six hundred forty-three thousand, three hundred fifty-eight".