633949423 has 8 divisors (see below), whose sum is σ = 638180816. Its totient is φ = 629726400.

The previous prime is 633949409. The next prime is 633949439. The reversal of 633949423 is 324949336.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 633949423 - 2⁹ = 633948911 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 633949423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633940423) 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 7 ways as a sum of consecutive naturals, for example, 232315 + ... + 235027.

It is an arithmetic number, because the mean of its divisors is an integer number (79772602).

Almost surely, 2^633949423 is an apocalyptic number.

633949423 is a deficient number, since it is larger than the sum of its proper divisors (4231393).

633949423 is a wasteful number, since it uses less digits than its factorization.

633949423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185.

The product of its digits is 419904, while the sum is 43.

The square root of 633949423 is about 25178.3522693603. The cubic root of 633949423 is about 859.0495281662.

The spelling of 633949423 in words is "six hundred thirty-three million, nine hundred forty-nine thousand, four hundred twenty-three".