200491291 has 72 divisors (see below), whose sum is σ = 288396288. Its totient is φ = 137592000.

The previous prime is 200491289. The next prime is 200491303. The reversal of 200491291 is 192194002.

It is a happy number.

It is not a de Polignac number, because 200491291 - 2¹ = 200491289 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 (200491261) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2823786 + ... + 2823856.

It is an arithmetic number, because the mean of its divisors is an integer number (4005504).

Almost surely, 2^200491291 is an apocalyptic number.

200491291 is a deficient number, since it is larger than the sum of its proper divisors (87904997).

200491291 is a wasteful number, since it uses less digits than its factorization.

200491291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 200491291 is about 14159.4947296858. The cubic root of 200491291 is about 585.2820039536.

It can be divided in two parts, 2004912 and 91, that added together give a triangular number (2005003 = T₂₀₀₂).

The spelling of 200491291 in words is "two hundred million, four hundred ninety-one thousand, two hundred ninety-one".