491457094 has 4 divisors (see below), whose sum is σ = 737185644. Its totient is φ = 245728546.

The previous prime is 491457091. The next prime is 491457137. The reversal of 491457094 is 490754194.

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

It is a self number, because there is not a number n which added to its sum of digits gives 491457094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491457091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122864272 + ... + 122864275.

It is an arithmetic number, because the mean of its divisors is an integer number (184296411).

Almost surely, 2^491457094 is an apocalyptic number.

491457094 is a deficient number, since it is larger than the sum of its proper divisors (245728550).

491457094 is a wasteful number, since it uses less digits than its factorization.

491457094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245728549.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 491457094 is about 22168.8315885163. The cubic root of 491457094 is about 789.1541949152.

The spelling of 491457094 in words is "four hundred ninety-one million, four hundred fifty-seven thousand, ninety-four".