423967 has 4 divisors (see below), whose sum is σ = 425656. Its totient is φ = 422280.

The previous prime is 423961. The next prime is 423977. The reversal of 423967 is 769324.

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 423967 - 2¹⁵ = 391199 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384 + ... + 997.

It is an arithmetic number, because the mean of its divisors is an integer number (106414).

2⁴²³⁹⁶⁷ is an apocalyptic number.

423967 is a deficient number, since it is larger than the sum of its proper divisors (1689).

423967 is a wasteful number, since it uses less digits than its factorization.

423967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688.

The product of its digits is 9072, while the sum is 31.

The square root of 423967 is about 651.1274836774. The cubic root of 423967 is about 75.1237660177.

The spelling of 423967 in words is "four hundred twenty-three thousand, nine hundred sixty-seven".