398855383 has 4 divisors (see below), whose sum is σ = 398979088. Its totient is φ = 398731680.

The previous prime is 398855381. The next prime is 398855407. The reversal of 398855383 is 383558893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398855383 - 2¹ = 398855381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398855383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398855381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56883 + ... + 63508.

It is an arithmetic number, because the mean of its divisors is an integer number (99744772).

Almost surely, 2^398855383 is an apocalyptic number.

398855383 is a deficient number, since it is larger than the sum of its proper divisors (123705).

398855383 is a wasteful number, since it uses less digits than its factorization.

398855383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123704.

The product of its digits is 3110400, while the sum is 52.

The square root of 398855383 is about 19971.3640745944. The cubic root of 398855383 is about 736.1028274485.

The spelling of 398855383 in words is "three hundred ninety-eight million, eight hundred fifty-five thousand, three hundred eighty-three".