423791 has 2 divisors, whose sum is σ = 423792. Its totient is φ = 423790.

The previous prime is 423781. The next prime is 423803. The reversal of 423791 is 197324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423791 - 2⁶ = 423727 is a prime.

It is equal to p₃₅₆₈₄ and since 423791 and 35684 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211895 + 211896.

It is an arithmetic number, because the mean of its divisors is an integer number (211896).

2⁴²³⁷⁹¹ is an apocalyptic number.

423791 is a deficient number, since it is larger than the sum of its proper divisors (1).

423791 is an equidigital number, since it uses as much as digits as its factorization.

423791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 423791 is about 650.9923194631. The cubic root of 423791 is about 75.1133692865.

The spelling of 423791 in words is "four hundred twenty-three thousand, seven hundred ninety-one".