494280091 has 2 divisors, whose sum is σ = 494280092. Its totient is φ = 494280090.

The previous prime is 494280071. The next prime is 494280109. The reversal of 494280091 is 190082494.

It is a happy number.

Together with next prime (494280109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494280091 - 2⁹ = 494279579 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494280091.

It is not a weakly prime, because it can be changed into another prime (494280071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247140045 + 247140046.

It is an arithmetic number, because the mean of its divisors is an integer number (247140046).

Almost surely, 2^494280091 is an apocalyptic number.

494280091 is a deficient number, since it is larger than the sum of its proper divisors (1).

494280091 is an equidigital number, since it uses as much as digits as its factorization.

494280091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 494280091 is about 22232.4108229405. The cubic root of 494280091 is about 790.6623143111.

The spelling of 494280091 in words is "four hundred ninety-four million, two hundred eighty thousand, ninety-one".