398626442 has 8 divisors (see below), whose sum is σ = 600053376. Its totient is φ = 198608652.

The previous prime is 398626439. The next prime is 398626451. The reversal of 398626442 is 244626893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 398626393 and 398626402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351578 + ... + 352709.

It is an arithmetic number, because the mean of its divisors is an integer number (75006672).

Almost surely, 2^398626442 is an apocalyptic number.

398626442 is a deficient number, since it is larger than the sum of its proper divisors (201426934).

398626442 is a wasteful number, since it uses less digits than its factorization.

398626442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704572.

The product of its digits is 497664, while the sum is 44.

The square root of 398626442 is about 19965.6315201899. The cubic root of 398626442 is about 735.9619607093.

The spelling of 398626442 in words is "three hundred ninety-eight million, six hundred twenty-six thousand, four hundred forty-two".