421998299 has 4 divisors (see below), whose sum is σ = 422040336. Its totient is φ = 421956264.

The previous prime is 421998277. The next prime is 421998307. The reversal of 421998299 is 992899124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 421998299 - 2²⁴ = 405221083 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 421998299.

It is not an unprimeable number, because it can be changed into a prime (421998799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842 + ... + 29304.

It is an arithmetic number, because the mean of its divisors is an integer number (105510084).

Almost surely, 2^421998299 is an apocalyptic number.

421998299 is a deficient number, since it is larger than the sum of its proper divisors (42037).

421998299 is a wasteful number, since it uses less digits than its factorization.

421998299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42036.

The product of its digits is 839808, while the sum is 53.

The square root of 421998299 is about 20542.5971824402. The cubic root of 421998299 is about 750.0730589570.

The spelling of 421998299 in words is "four hundred twenty-one million, nine hundred ninety-eight thousand, two hundred ninety-nine".