494420191 has 4 divisors (see below), whose sum is σ = 494470872. Its totient is φ = 494369512.

The previous prime is 494420141. The next prime is 494420219. The reversal of 494420191 is 191024494.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 494420191 - 2¹⁵ = 494387423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494420111) 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, 5560 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (123617718).

Almost surely, 2^494420191 is an apocalyptic number.

494420191 is a deficient number, since it is larger than the sum of its proper divisors (50681).

494420191 is a wasteful number, since it uses less digits than its factorization.

494420191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50680.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 494420191 is about 22235.5614051006. The cubic root of 494420191 is about 790.7370096968.

The spelling of 494420191 in words is "four hundred ninety-four million, four hundred twenty thousand, one hundred ninety-one".