398422723123 has 8 divisors (see below), whose sum is σ = 401560782480. Its totient is φ = 395286128640.

The previous prime is 398422723121. The next prime is 398422723129. The reversal of 398422723123 is 321327224893.

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

It is a cyclic number.

It is not a de Polignac number, because 398422723123 - 2¹ = 398422723121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398422723121) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 183123 + ... + 911251.

It is an arithmetic number, because the mean of its divisors is an integer number (50195097810).

Almost surely, 2^398422723123 is an apocalyptic number.

398422723123 is a deficient number, since it is larger than the sum of its proper divisors (3138059357).

398422723123 is a wasteful number, since it uses less digits than its factorization.

398422723123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732437.

The product of its digits is 870912, while the sum is 46.

The spelling of 398422723123 in words is "three hundred ninety-eight billion, four hundred twenty-two million, seven hundred twenty-three thousand, one hundred twenty-three".