423706447 has 4 divisors (see below), whose sum is σ = 423993640. Its totient is φ = 423419256.

The previous prime is 423706429. The next prime is 423706463. The reversal of 423706447 is 744607324.

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

It is a cyclic number.

It is not a de Polignac number, because 423706447 - 2⁷ = 423706319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423700447) 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, 141372 + ... + 144337.

It is an arithmetic number, because the mean of its divisors is an integer number (105998410).

Almost surely, 2^423706447 is an apocalyptic number.

423706447 is a deficient number, since it is larger than the sum of its proper divisors (287193).

423706447 is a wasteful number, since it uses less digits than its factorization.

423706447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287192.

The product of its (nonzero) digits is 112896, while the sum is 37.

The square root of 423706447 is about 20584.1309508077. The cubic root of 423706447 is about 751.0837351957.

The spelling of 423706447 in words is "four hundred twenty-three million, seven hundred six thousand, four hundred forty-seven".