398885699 has 4 divisors (see below), whose sum is σ = 401930760. Its totient is φ = 395840640.

The previous prime is 398885689. The next prime is 398885701. The reversal of 398885699 is 996588893.

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 398885699 - 2²⁰ = 397837123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398885689) 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, 1522334 + ... + 1522595.

It is an arithmetic number, because the mean of its divisors is an integer number (100482690).

Almost surely, 2^398885699 is an apocalyptic number.

398885699 is a deficient number, since it is larger than the sum of its proper divisors (3045061).

398885699 is a wasteful number, since it uses less digits than its factorization.

398885699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045060.

The product of its digits is 33592320, while the sum is 65.

The square root of 398885699 is about 19972.1230468871. The cubic root of 398885699 is about 736.1214767543.

The spelling of 398885699 in words is "three hundred ninety-eight million, eight hundred eighty-five thousand, six hundred ninety-nine".