423973633 has 4 divisors (see below), whose sum is σ = 426674260. Its totient is φ = 421273008.

The previous prime is 423973631. The next prime is 423973663. The reversal of 423973633 is 336379324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 85155984 + 338817649 = 9228^2 + 18407^2 .

It is a cyclic number.

It is not a de Polignac number, because 423973633 - 2¹ = 423973631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423973631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350078 + ... + 1350391.

It is an arithmetic number, because the mean of its divisors is an integer number (106668565).

Almost surely, 2^423973633 is an apocalyptic number.

It is an amenable number.

423973633 is a deficient number, since it is larger than the sum of its proper divisors (2700627).

423973633 is a wasteful number, since it uses less digits than its factorization.

423973633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700626.

The product of its digits is 244944, while the sum is 40.

The square root of 423973633 is about 20590.6200246617. The cubic root of 423973633 is about 751.2415778820.

The spelling of 423973633 in words is "four hundred twenty-three million, nine hundred seventy-three thousand, six hundred thirty-three".