421794633 has 24 divisors (see below), whose sum is σ = 643393408. Its totient is φ = 244290816.

The previous prime is 421794619. The next prime is 421794643. The reversal of 421794633 is 336497124.

It is not a de Polignac number, because 421794633 - 2¹⁴ = 421778249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421794591 and 421794600.

It is not an unprimeable number, because it can be changed into a prime (421794643) 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 23 ways as a sum of consecutive naturals, for example, 7441 + ... + 29982.

Almost surely, 2^421794633 is an apocalyptic number.

It is an amenable number.

421794633 is a deficient number, since it is larger than the sum of its proper divisors (221598775).

421794633 is a wasteful number, since it uses less digits than its factorization.

421794633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37473 (or 37456 counting only the distinct ones).

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

The square root of 421794633 is about 20537.6394213162. The cubic root of 421794633 is about 749.9523720866.

The spelling of 421794633 in words is "four hundred twenty-one million, seven hundred ninety-four thousand, six hundred thirty-three".