491400884 has 12 divisors (see below), whose sum is σ = 926101764. Its totient is φ = 226800384.

The previous prime is 491400881. The next prime is 491400893. The reversal of 491400884 is 488004194.

It can be written as a sum of positive squares in 2 ways, for example, as 195216784 + 296184100 = 13972^2 + 17210^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491400881) 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, 4724957 + ... + 4725060.

It is an arithmetic number, because the mean of its divisors is an integer number (77175147).

Almost surely, 2^491400884 is an apocalyptic number.

It is an amenable number.

491400884 is a deficient number, since it is larger than the sum of its proper divisors (434700880).

491400884 is a wasteful number, since it uses less digits than its factorization.

491400884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450034 (or 9450032 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 491400884 is about 22167.5637813450. The cubic root of 491400884 is about 789.1241074812.

The spelling of 491400884 in words is "four hundred ninety-one million, four hundred thousand, eight hundred eighty-four".