473017991 has 4 divisors (see below), whose sum is σ = 473195184. Its totient is φ = 472840800.

The previous prime is 473017969. The next prime is 473017997. The reversal of 473017991 is 199710374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199710374 = 2 ⋅99855187.

It is a cyclic number.

It is not a de Polignac number, because 473017991 - 2²² = 468823687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (473017997) 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, 84530 + ... + 89951.

It is an arithmetic number, because the mean of its divisors is an integer number (118298796).

Almost surely, 2^473017991 is an apocalyptic number.

473017991 is a deficient number, since it is larger than the sum of its proper divisors (177193).

473017991 is a wasteful number, since it uses less digits than its factorization.

473017991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177192.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 473017991 is about 21748.9767805292. The cubic root of 473017991 is about 779.1586319906.

The spelling of 473017991 in words is "four hundred seventy-three million, seventeen thousand, nine hundred ninety-one".