497374991 has 2 divisors, whose sum is σ = 497374992. Its totient is φ = 497374990.

The previous prime is 497374981. The next prime is 497375003. The reversal of 497374991 is 199473794.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497374991 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 (497374921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248687495 + 248687496.

It is an arithmetic number, because the mean of its divisors is an integer number (248687496).

Almost surely, 2^497374991 is an apocalyptic number.

497374991 is a deficient number, since it is larger than the sum of its proper divisors (1).

497374991 is an equidigital number, since it uses as much as digits as its factorization.

497374991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 53.

The square root of 497374991 is about 22301.9055463877. The cubic root of 497374991 is about 792.3091074623.

The spelling of 497374991 in words is "four hundred ninety-seven million, three hundred seventy-four thousand, nine hundred ninety-one".