422447747 has 4 divisors (see below), whose sum is σ = 424570800. Its totient is φ = 420324696.

The previous prime is 422447743. The next prime is 422447749. The reversal of 422447747 is 747744224.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 422447747 - 2² = 422447743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422447743) 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, 1061228 + ... + 1061625.

It is an arithmetic number, because the mean of its divisors is an integer number (106142700).

Almost surely, 2^422447747 is an apocalyptic number.

422447747 is a deficient number, since it is larger than the sum of its proper divisors (2123053).

422447747 is a wasteful number, since it uses less digits than its factorization.

422447747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123052.

The product of its digits is 351232, while the sum is 41.

The square root of 422447747 is about 20553.5336864492. The cubic root of 422447747 is about 750.3392521505.

The spelling of 422447747 in words is "four hundred twenty-two million, four hundred forty-seven thousand, seven hundred forty-seven".