398408673 has 8 divisors (see below), whose sum is σ = 572074048. Its totient is φ = 245174544.

The previous prime is 398408671. The next prime is 398408687. The reversal of 398408673 is 376804893.

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

It is not a de Polignac number, because 398408673 - 2¹ = 398408671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398408671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5107765 + ... + 5107842.

It is an arithmetic number, because the mean of its divisors is an integer number (71509256).

Almost surely, 2^398408673 is an apocalyptic number.

It is an amenable number.

398408673 is a deficient number, since it is larger than the sum of its proper divisors (173665375).

398408673 is a wasteful number, since it uses less digits than its factorization.

398408673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215623.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 398408673 is about 19960.1771785723. The cubic root of 398408673 is about 735.8279180090.

The spelling of 398408673 in words is "three hundred ninety-eight million, four hundred eight thousand, six hundred seventy-three".