398824442 has 8 divisors (see below), whose sum is σ = 600620832. Its totient is φ = 198617500.

The previous prime is 398824429. The next prime is 398824451. The reversal of 398824442 is 244428893.

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

It is a super-2 number, since 2×398824442² = 318121871073222728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398824393 and 398824402.

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, 396734 + ... + 397737.

It is an arithmetic number, because the mean of its divisors is an integer number (75077604).

Almost surely, 2^398824442 is an apocalyptic number.

398824442 is a deficient number, since it is larger than the sum of its proper divisors (201796390).

398824442 is a wasteful number, since it uses less digits than its factorization.

398824442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794724.

The product of its digits is 442368, while the sum is 44.

The square root of 398824442 is about 19970.5894254526. The cubic root of 398824442 is about 736.0837926910.

The spelling of 398824442 in words is "three hundred ninety-eight million, eight hundred twenty-four thousand, four hundred forty-two".