473142991 has 2 divisors, whose sum is σ = 473142992. Its totient is φ = 473142990.

The previous prime is 473142961. The next prime is 473143001. The reversal of 473142991 is 199241374.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-473142991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473142961) 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 as a sum of consecutive naturals, namely, 236571495 + 236571496.

It is an arithmetic number, because the mean of its divisors is an integer number (236571496).

Almost surely, 2^473142991 is an apocalyptic number.

473142991 is a deficient number, since it is larger than the sum of its proper divisors (1).

473142991 is an equidigital number, since it uses as much as digits as its factorization.

473142991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 473142991 is about 21751.8502891133. The cubic root of 473142991 is about 779.2272595784.

It can be divided in two parts, 47314 and 2991, that added together give a palindrome (50305).

The spelling of 473142991 in words is "four hundred seventy-three million, one hundred forty-two thousand, nine hundred ninety-one".