499950091 has 2 divisors, whose sum is σ = 499950092. Its totient is φ = 499950090.

The previous prime is 499950049. The next prime is 499950109. The reversal of 499950091 is 190059994.

Together with next prime (499950109) 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 499950091 - 2¹⁹ = 499425803 is a prime.

It is not a weakly prime, because it can be changed into another prime (499950041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249975045 + 249975046.

It is an arithmetic number, because the mean of its divisors is an integer number (249975046).

Almost surely, 2^499950091 is an apocalyptic number.

499950091 is a deficient number, since it is larger than the sum of its proper divisors (1).

499950091 is an equidigital number, since it uses as much as digits as its factorization.

499950091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 499950091 is about 22359.5637479804. The cubic root of 499950091 is about 793.6741165723.

The spelling of 499950091 in words is "four hundred ninety-nine million, nine hundred fifty thousand, ninety-one".