423901 has 4 divisors (see below), whose sum is σ = 427900. Its totient is φ = 419904.

The previous prime is 423887. The next prime is 423931. The reversal of 423901 is 109324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 122500 = 549^2 + 350^2 .

It is a 3-Lehmer number, since φ(423901) divides (423901-1)³.

It is a cyclic number.

It is not a de Polignac number, because 423901 - 2⁵ = 423869 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836 + ... + 2053.

It is an arithmetic number, because the mean of its divisors is an integer number (106975).

2⁴²³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

423901 is a deficient number, since it is larger than the sum of its proper divisors (3999).

423901 is a wasteful number, since it uses less digits than its factorization.

423901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 423901 is about 651.0768003853. The cubic root of 423901 is about 75.1198675807.

The spelling of 423901 in words is "four hundred twenty-three thousand, nine hundred one".