398826770705 has 8 divisors (see below), whose sum is σ = 522100499904. Its totient is φ = 290055833200.

The previous prime is 398826770689. The next prime is 398826770747. The reversal of 398826770705 is 507077628893.

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

It is not a de Polignac number, because 398826770705 - 2⁴ = 398826770689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625697861 + ... + 3625697970.

It is an arithmetic number, because the mean of its divisors is an integer number (65262562488).

Almost surely, 2^398826770705 is an apocalyptic number.

It is an amenable number.

398826770705 is a deficient number, since it is larger than the sum of its proper divisors (123273729199).

398826770705 is a wasteful number, since it uses less digits than its factorization.

398826770705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251395847.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 398826770705 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, seven hundred seventy thousand, seven hundred five".