491954434 has 8 divisors (see below), whose sum is σ = 763377660. Its totient is φ = 237495216.

The previous prime is 491954431. The next prime is 491954453. The reversal of 491954434 is 434459194.

It can be written as a sum of positive squares in 2 ways, for example, as 490755409 + 1199025 = 22153^2 + 1095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (491954431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4240929 + ... + 4241044.

Almost surely, 2^491954434 is an apocalyptic number.

491954434 is a deficient number, since it is larger than the sum of its proper divisors (271423226).

491954434 is a wasteful number, since it uses less digits than its factorization.

491954434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482004.

The product of its digits is 311040, while the sum is 43.

The square root of 491954434 is about 22180.0458520716. The cubic root of 491954434 is about 789.4203053817.

The spelling of 491954434 in words is "four hundred ninety-one million, nine hundred fifty-four thousand, four hundred thirty-four".