420799999 has 8 divisors (see below), whose sum is σ = 427447728. Its totient is φ = 414163200.

The previous prime is 420799993. The next prime is 420800089. The reversal of 420799999 is 999997024.

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 420799999 - 2¹³ = 420791807 is a prime.

It is a Duffinian number.

420799999 is a modest number, since divided by 99999 gives 4207 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420799993) 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, 111849 + ... + 115549.

It is an arithmetic number, because the mean of its divisors is an integer number (53430966).

Almost surely, 2^420799999 is an apocalyptic number.

420799999 is a deficient number, since it is larger than the sum of its proper divisors (6647729).

420799999 is a wasteful number, since it uses less digits than its factorization.

420799999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its (nonzero) digits is 3306744, while the sum is 58.

The square root of 420799999 is about 20513.4102235586. The cubic root of 420799999 is about 749.3624205138.

The spelling of 420799999 in words is "four hundred twenty million, seven hundred ninety-nine thousand, nine hundred ninety-nine".