422391377 has 2 divisors, whose sum is σ = 422391378. Its totient is φ = 422391376.

The previous prime is 422391353. The next prime is 422391379. The reversal of 422391377 is 773193224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407676481 + 14714896 = 20191^2 + 3836^2 .

It is a cyclic number.

It is not a de Polignac number, because 422391377 - 2¹² = 422387281 is a prime.

It is a super-2 number, since 2×422391377² = 356828950727912258, which contains 22 as substring.

Together with 422391379, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422391377.

It is not a weakly prime, because it can be changed into another prime (422391379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211195688 + 211195689.

It is an arithmetic number, because the mean of its divisors is an integer number (211195689).

Almost surely, 2^422391377 is an apocalyptic number.

It is an amenable number.

422391377 is a deficient number, since it is larger than the sum of its proper divisors (1).

422391377 is an equidigital number, since it uses as much as digits as its factorization.

422391377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 422391377 is about 20552.1623436562. The cubic root of 422391377 is about 750.3058764210.

The spelling of 422391377 in words is "four hundred twenty-two million, three hundred ninety-one thousand, three hundred seventy-seven".