398726884329 has 32 divisors (see below), whose sum is σ = 584981299200. Its totient is φ = 240619092480.

The previous prime is 398726884313. The next prime is 398726884331. The reversal of 398726884329 is 923488627893.

It is not a de Polignac number, because 398726884329 - 2⁴ = 398726884313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398726884379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288584 + ... + 1567769.

It is an arithmetic number, because the mean of its divisors is an integer number (18280665600).

Almost surely, 2^398726884329 is an apocalyptic number.

It is an amenable number.

398726884329 is a deficient number, since it is larger than the sum of its proper divisors (186254414871).

398726884329 is a wasteful number, since it uses less digits than its factorization.

398726884329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856485.

The product of its digits is 250822656, while the sum is 69.

The spelling of 398726884329 in words is "three hundred ninety-eight billion, seven hundred twenty-six million, eight hundred eighty-four thousand, three hundred twenty-nine".