491703403 has 4 divisors (see below), whose sum is σ = 491900968. Its totient is φ = 491505840.

The previous prime is 491703389. The next prime is 491703437. The reversal of 491703403 is 304307194.

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

It is a cyclic number.

It is not a de Polignac number, because 491703403 - 2⁹ = 491702891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491703473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95001 + ... + 100042.

It is an arithmetic number, because the mean of its divisors is an integer number (122975242).

Almost surely, 2^491703403 is an apocalyptic number.

491703403 is a deficient number, since it is larger than the sum of its proper divisors (197565).

491703403 is a wasteful number, since it uses less digits than its factorization.

491703403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197564.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 491703403 is about 22174.3861921813. The cubic root of 491703403 is about 789.2860092821.

The spelling of 491703403 in words is "four hundred ninety-one million, seven hundred three thousand, four hundred three".