420303399 has 4 divisors (see below), whose sum is σ = 560404536. Its totient is φ = 280202264.

The previous prime is 420303361. The next prime is 420303407. The reversal of 420303399 is 993303024.

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 420303399 - 2⁷ = 420303271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420303329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70050564 + ... + 70050569.

It is an arithmetic number, because the mean of its divisors is an integer number (140101134).

Almost surely, 2^420303399 is an apocalyptic number.

420303399 is a deficient number, since it is larger than the sum of its proper divisors (140101137).

420303399 is a wasteful number, since it uses less digits than its factorization.

420303399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140101136.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 420303399 is about 20501.3023732640. The cubic root of 420303399 is about 749.0675220158.

The spelling of 420303399 in words is "four hundred twenty million, three hundred three thousand, three hundred ninety-nine".