291422 has 8 divisors (see below), whose sum is σ = 460200. Its totient is φ = 138024.

The previous prime is 291419. The next prime is 291437. The reversal of 291422 is 224192.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 291394 and 291403.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291422.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3797 + ... + 3872.

It is an arithmetic number, because the mean of its divisors is an integer number (57525).

2²⁹¹⁴²² is an apocalyptic number.

291422 is a deficient number, since it is larger than the sum of its proper divisors (168778).

291422 is a wasteful number, since it uses less digits than its factorization.

291422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690.

The product of its digits is 288, while the sum is 20.

The square root of 291422 is about 539.8351600257. The cubic root of 291422 is about 66.2990712742.

The spelling of 291422 in words is "two hundred ninety-one thousand, four hundred twenty-two".