423691473 has 4 divisors (see below), whose sum is σ = 564921968. Its totient is φ = 282460980.

The previous prime is 423691447. The next prime is 423691481. The reversal of 423691473 is 374196324.

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 not a de Polignac number, because 423691473 - 2⁹ = 423690961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423691423) 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, 70615243 + ... + 70615248.

It is an arithmetic number, because the mean of its divisors is an integer number (141230492).

Almost surely, 2^423691473 is an apocalyptic number.

It is an amenable number.

423691473 is a deficient number, since it is larger than the sum of its proper divisors (141230495).

423691473 is a wasteful number, since it uses less digits than its factorization.

423691473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141230494.

The product of its digits is 108864, while the sum is 39.

The square root of 423691473 is about 20583.7672207980. The cubic root of 423691473 is about 751.0748871985.

The spelling of 423691473 in words is "four hundred twenty-three million, six hundred ninety-one thousand, four hundred seventy-three".