401843998 has 4 divisors (see below), whose sum is σ = 602766000. Its totient is φ = 200921998.

The previous prime is 401843969. The next prime is 401844029. The reversal of 401843998 is 899348104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×401843998² = 322957197457248008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100460998 + ... + 100461001.

It is an arithmetic number, because the mean of its divisors is an integer number (150691500).

Almost surely, 2^401843998 is an apocalyptic number.

401843998 is a deficient number, since it is larger than the sum of its proper divisors (200922002).

401843998 is a wasteful number, since it uses less digits than its factorization.

401843998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200922001.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 401843998 is about 20046.0469419784. The cubic root of 401843998 is about 737.9367887733.

The spelling of 401843998 in words is "four hundred one million, eight hundred forty-three thousand, nine hundred ninety-eight".