497422391 has 2 divisors, whose sum is σ = 497422392. Its totient is φ = 497422390.

The previous prime is 497422369. The next prime is 497422421. The reversal of 497422391 is 193224794.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497422391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497422301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248711195 + 248711196.

It is an arithmetic number, because the mean of its divisors is an integer number (248711196).

Almost surely, 2^497422391 is an apocalyptic number.

497422391 is a deficient number, since it is larger than the sum of its proper divisors (1).

497422391 is an equidigital number, since it uses as much as digits as its factorization.

497422391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 497422391 is about 22302.9682105320. The cubic root of 497422391 is about 792.3342757689.

The spelling of 497422391 in words is "four hundred ninety-seven million, four hundred twenty-two thousand, three hundred ninety-one".