422819251 has 4 divisors (see below), whose sum is σ = 422861904. Its totient is φ = 422776600.

The previous prime is 422819233. The next prime is 422819303. The reversal of 422819251 is 152918224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 422819251 - 2⁷ = 422819123 is a prime.

It is a super-2 number, since 2×422819251² = 357552238032402002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422819351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (105715476).

Almost surely, 2^422819251 is an apocalyptic number.

422819251 is a deficient number, since it is larger than the sum of its proper divisors (42653).

422819251 is a wasteful number, since it uses less digits than its factorization.

422819251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42652.

The product of its digits is 11520, while the sum is 34.

The square root of 422819251 is about 20562.5691731359. The cubic root of 422819251 is about 750.5591391957.

The spelling of 422819251 in words is "four hundred twenty-two million, eight hundred nineteen thousand, two hundred fifty-one".