423787 has 8 divisors (see below), whose sum is σ = 521696. Its totient is φ = 335232.

The previous prime is 423781. The next prime is 423791. The reversal of 423787 is 787324.

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 423787 - 2³ = 423779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423781) 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 7 ways as a sum of consecutive naturals, for example, 2238 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (65212).

2⁴²³⁷⁸⁷ is an apocalyptic number.

423787 is a deficient number, since it is larger than the sum of its proper divisors (97909).

423787 is a wasteful number, since it uses less digits than its factorization.

423787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its digits is 9408, while the sum is 31.

The square root of 423787 is about 650.9892472230. The cubic root of 423787 is about 75.1131329637.

The spelling of 423787 in words is "four hundred twenty-three thousand, seven hundred eighty-seven".