398830850879 has 8 divisors (see below), whose sum is σ = 422893914768. Its totient is φ = 374834723200.

The previous prime is 398830850867. The next prime is 398830850911. The reversal of 398830850879 is 978058038893.

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 398830850879 - 2¹⁶ = 398830785343 is a prime.

It is a super-2 number, since 2×398830850879² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398830850819) 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, 16721777 + ... + 16745610.

It is an arithmetic number, because the mean of its divisors is an integer number (52861739346).

Almost surely, 2^398830850879 is an apocalyptic number.

398830850879 is a deficient number, since it is larger than the sum of its proper divisors (24063063889).

398830850879 is a wasteful number, since it uses less digits than its factorization.

398830850879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33468105.

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 398830850879 in words is "three hundred ninety-eight billion, eight hundred thirty million, eight hundred fifty thousand, eight hundred seventy-nine".