422721049 has 4 divisors (see below), whose sum is σ = 423582480. Its totient is φ = 421859620.

The previous prime is 422721037. The next prime is 422721059. The reversal of 422721049 is 940127224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422721049 - 2²³ = 414332441 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 422721049.

It is not an unprimeable number, because it can be changed into a prime (422721059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429979 + ... + 430960.

It is an arithmetic number, because the mean of its divisors is an integer number (105895620).

Almost surely, 2^422721049 is an apocalyptic number.

It is an amenable number.

422721049 is a deficient number, since it is larger than the sum of its proper divisors (861431).

422721049 is an equidigital number, since it uses as much as digits as its factorization.

422721049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861430.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 422721049 is about 20560.1811519257. The cubic root of 422721049 is about 750.5010275910.

The spelling of 422721049 in words is "four hundred twenty-two million, seven hundred twenty-one thousand, forty-nine".