398899699 has 8 divisors (see below), whose sum is σ = 458066880. Its totient is φ = 343549800.

The previous prime is 398899681. The next prime is 398899703. The reversal of 398899699 is 996998893.

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

It is not a de Polignac number, because 398899699 - 2⁹ = 398899187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398899639) 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, 954097 + ... + 954514.

It is an arithmetic number, because the mean of its divisors is an integer number (57258360).

Almost surely, 2^398899699 is an apocalyptic number.

398899699 is a deficient number, since it is larger than the sum of its proper divisors (59167181).

398899699 is a wasteful number, since it uses less digits than its factorization.

398899699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908641.

The product of its digits is 68024448, while the sum is 70.

The square root of 398899699 is about 19972.4735323395. The cubic root of 398899699 is about 736.1300887285.

The spelling of 398899699 in words is "three hundred ninety-eight million, eight hundred ninety-nine thousand, six hundred ninety-nine".