422636403 has 8 divisors (see below), whose sum is σ = 644017408. Its totient is φ = 241506504.

The previous prime is 422636387. The next prime is 422636407. The reversal of 422636403 is 304636224.

It is a happy number.

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

It is not a de Polignac number, because 422636403 - 2⁴ = 422636387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422636407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10062751 + ... + 10062792.

It is an arithmetic number, because the mean of its divisors is an integer number (80502176).

Almost surely, 2^422636403 is an apocalyptic number.

422636403 is a deficient number, since it is larger than the sum of its proper divisors (221381005).

422636403 is a wasteful number, since it uses less digits than its factorization.

422636403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20125553.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 422636403 is about 20558.1225553308. The cubic root of 422636403 is about 750.4509306056.

The spelling of 422636403 in words is "four hundred twenty-two million, six hundred thirty-six thousand, four hundred three".