398446630 has 16 divisors (see below), whose sum is σ = 718187760. Its totient is φ = 159160032.

The previous prime is 398446621. The next prime is 398446637. The reversal of 398446630 is 36644893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398446637) 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, 19569 + ... + 34348.

It is an arithmetic number, because the mean of its divisors is an integer number (44886735).

Almost surely, 2^398446630 is an apocalyptic number.

398446630 is a deficient number, since it is larger than the sum of its proper divisors (319741130).

398446630 is a wasteful number, since it uses less digits than its factorization.

398446630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54663.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 398446630 is about 19961.1279741401. The cubic root of 398446630 is about 735.8512850817.

The spelling of 398446630 in words is "three hundred ninety-eight million, four hundred forty-six thousand, six hundred thirty".