422145669 has 16 divisors (see below), whose sum is σ = 615551040. Its totient is φ = 255212160.

The previous prime is 422145637. The next prime is 422145677. The reversal of 422145669 is 966541224.

It is a happy number.

It is not a de Polignac number, because 422145669 - 2⁵ = 422145637 is a prime.

It is a super-2 number, since 2×422145669² = 356413931710915122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422145769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142 + ... + 29135.

It is an arithmetic number, because the mean of its divisors is an integer number (38471940).

Almost surely, 2^422145669 is an apocalyptic number.

It is an amenable number.

422145669 is a deficient number, since it is larger than the sum of its proper divisors (193405371).

422145669 is a wasteful number, since it uses less digits than its factorization.

422145669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31700.

The product of its digits is 103680, while the sum is 39.

The square root of 422145669 is about 20546.1838062449. The cubic root of 422145669 is about 750.1603621540.

The spelling of 422145669 in words is "four hundred twenty-two million, one hundred forty-five thousand, six hundred sixty-nine".