422351779 has 4 divisors (see below), whose sum is σ = 444580840. Its totient is φ = 400122720.

The previous prime is 422351759. The next prime is 422351827. The reversal of 422351779 is 977153224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422351779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422351749) 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, 11114502 + ... + 11114539.

It is an arithmetic number, because the mean of its divisors is an integer number (111145210).

Almost surely, 2^422351779 is an apocalyptic number.

422351779 is a deficient number, since it is larger than the sum of its proper divisors (22229061).

422351779 is a wasteful number, since it uses less digits than its factorization.

422351779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22229060.

The product of its digits is 105840, while the sum is 40.

The square root of 422351779 is about 20551.1989674569. The cubic root of 422351779 is about 750.2824293352.

The spelling of 422351779 in words is "four hundred twenty-two million, three hundred fifty-one thousand, seven hundred seventy-nine".