423937 has 4 divisors (see below), whose sum is σ = 433840. Its totient is φ = 414036.

The previous prime is 423931. The next prime is 423949. The reversal of 423937 is 739324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423937 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4887 + ... + 4972.

It is an arithmetic number, because the mean of its divisors is an integer number (108460).

It is a Proth number, since it is equal to 207 ⋅ 2¹¹ + 1 and 207 < 2¹¹.

2⁴²³⁹³⁷ is an apocalyptic number.

It is an amenable number.

423937 is a deficient number, since it is larger than the sum of its proper divisors (9903).

423937 is an equidigital number, since it uses as much as digits as its factorization.

423937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9902.

The product of its digits is 4536, while the sum is 28.

The square root of 423937 is about 651.1044463064. The cubic root of 423937 is about 75.1219940510.

The spelling of 423937 in words is "four hundred twenty-three thousand, nine hundred thirty-seven".