491190699 has 4 divisors (see below), whose sum is σ = 654920936. Its totient is φ = 327460464.

The previous prime is 491190611. The next prime is 491190703. The reversal of 491190699 is 996091194.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 491190699 - 2⁹ = 491190187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491190899) 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, 81865114 + ... + 81865119.

It is an arithmetic number, because the mean of its divisors is an integer number (163730234).

Almost surely, 2^491190699 is an apocalyptic number.

491190699 is a deficient number, since it is larger than the sum of its proper divisors (163730237).

491190699 is a wasteful number, since it uses less digits than its factorization.

491190699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163730236.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 491190699 is about 22162.8224511230. The cubic root of 491190699 is about 789.0115817686.

The spelling of 491190699 in words is "four hundred ninety-one million, one hundred ninety thousand, six hundred ninety-nine".