423864899 has 4 divisors (see below), whose sum is σ = 438480960. Its totient is φ = 409248840.

The previous prime is 423864887. The next prime is 423864923. The reversal of 423864899 is 998468324.

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 423864899 - 2²⁰ = 422816323 is a prime.

It is a super-2 number, since 2×423864899² = 359322905208560402, which contains 22 as substring.

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 423864899.

It is not an unprimeable number, because it can be changed into a prime (423864839) 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, 7307987 + ... + 7308044.

It is an arithmetic number, because the mean of its divisors is an integer number (109620240).

Almost surely, 2^423864899 is an apocalyptic number.

423864899 is a deficient number, since it is larger than the sum of its proper divisors (14616061).

423864899 is a wasteful number, since it uses less digits than its factorization.

423864899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14616060.

The product of its digits is 2985984, while the sum is 53.

The square root of 423864899 is about 20587.9794783267. The cubic root of 423864899 is about 751.1773502355.

The spelling of 423864899 in words is "four hundred twenty-three million, eight hundred sixty-four thousand, eight hundred ninety-nine".