423465391 has 4 divisors (see below), whose sum is σ = 423730512. Its totient is φ = 423200272.

The previous prime is 423465373. The next prime is 423465409. The reversal of 423465391 is 193564324.

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

It is an interprime number because it is at equal distance from previous prime (423465373) and next prime (423465409).

It is a cyclic number.

It is not a de Polignac number, because 423465391 - 2⁹ = 423464879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423465391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423466391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130150 + ... + 133363.

It is an arithmetic number, because the mean of its divisors is an integer number (105932628).

Almost surely, 2^423465391 is an apocalyptic number.

423465391 is a deficient number, since it is larger than the sum of its proper divisors (265121).

423465391 is a wasteful number, since it uses less digits than its factorization.

423465391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265120.

The product of its digits is 77760, while the sum is 37.

The square root of 423465391 is about 20578.2747333201. The cubic root of 423465391 is about 750.9412721075.

The spelling of 423465391 in words is "four hundred twenty-three million, four hundred sixty-five thousand, three hundred ninety-one".