423396287 has 4 divisors (see below), whose sum is σ = 424775736. Its totient is φ = 422016840.

The previous prime is 423396263. The next prime is 423396293. The reversal of 423396287 is 782693324.

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 423396287 - 2¹⁰ = 423395263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423396887) 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, 689264 + ... + 689877.

It is an arithmetic number, because the mean of its divisors is an integer number (106193934).

Almost surely, 2^423396287 is an apocalyptic number.

423396287 is a deficient number, since it is larger than the sum of its proper divisors (1379449).

423396287 is a wasteful number, since it uses less digits than its factorization.

423396287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379448.

The product of its digits is 435456, while the sum is 44.

The square root of 423396287 is about 20576.5956124914. The cubic root of 423396287 is about 750.9004219619.

The spelling of 423396287 in words is "four hundred twenty-three million, three hundred ninety-six thousand, two hundred eighty-seven".