423974 has 8 divisors (see below), whose sum is σ = 646920. Its totient is φ = 208336.

The previous prime is 423961. The next prime is 423977. The reversal of 423974 is 479324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423974.

It is not an unprimeable number, because it can be changed into a prime (423977) by changing a digit.

423974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (80865).

2⁴²³⁹⁷⁴ is an apocalyptic number.

423974 is a deficient number, since it is larger than the sum of its proper divisors (222946).

423974 is a wasteful number, since it uses less digits than its factorization.

423974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654.

The product of its digits is 6048, while the sum is 29.

The square root of 423974 is about 651.1328589466. The cubic root of 423974 is about 75.1241794645.

The spelling of 423974 in words is "four hundred twenty-three thousand, nine hundred seventy-four".