398742801 has 8 divisors (see below), whose sum is σ = 548807424. Its totient is φ = 257253360.

The previous prime is 398742763. The next prime is 398742811. The reversal of 398742801 is 108247893.

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

It is not a de Polignac number, because 398742801 - 2⁶ = 398742737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398742811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143686 + ... + 2143871.

It is an arithmetic number, because the mean of its divisors is an integer number (68600928).

Almost surely, 2^398742801 is an apocalyptic number.

398742801 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

398742801 is a deficient number, since it is larger than the sum of its proper divisors (150064623).

398742801 is a wasteful number, since it uses less digits than its factorization.

398742801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287591.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 398742801 is about 19968.5452900305. The cubic root of 398742801 is about 736.0335628057.

The spelling of 398742801 in words is "three hundred ninety-eight million, seven hundred forty-two thousand, eight hundred one".