499512091 has 16 divisors (see below), whose sum is σ = 562234176. Its totient is φ = 440326656.

The previous prime is 499512049. The next prime is 499512239. The reversal of 499512091 is 190215994.

It is a cyclic number.

It is not a de Polignac number, because 499512091 - 2²⁵ = 465957659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499512031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284071 + ... + 285823.

It is an arithmetic number, because the mean of its divisors is an integer number (35139636).

Almost surely, 2^499512091 is an apocalyptic number.

499512091 is a deficient number, since it is larger than the sum of its proper divisors (62722085).

499512091 is a wasteful number, since it uses less digits than its factorization.

499512091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 499512091 is about 22349.7671352522. The cubic root of 499512091 is about 793.4422728766.

The spelling of 499512091 in words is "four hundred ninety-nine million, five hundred twelve thousand, ninety-one".