422171691 has 4 divisors (see below), whose sum is σ = 562895592. Its totient is φ = 281447792.

The previous prime is 422171681. The next prime is 422171699. The reversal of 422171691 is 196171224.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 422171691 - 2⁶ = 422171627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422171699) 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, 70361946 + ... + 70361951.

It is an arithmetic number, because the mean of its divisors is an integer number (140723898).

Almost surely, 2^422171691 is an apocalyptic number.

422171691 is a deficient number, since it is larger than the sum of its proper divisors (140723901).

422171691 is a wasteful number, since it uses less digits than its factorization.

422171691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140723900.

The product of its digits is 6048, while the sum is 33.

The square root of 422171691 is about 20546.8170527700. The cubic root of 422171691 is about 750.1757756895.

The spelling of 422171691 in words is "four hundred twenty-two million, one hundred seventy-one thousand, six hundred ninety-one".