943117491 has 4 divisors (see below), whose sum is σ = 1257489992. Its totient is φ = 628744992.

The previous prime is 943117481. The next prime is 943117499. The reversal of 943117491 is 194711349.

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

It is not a de Polignac number, because 943117491 - 2²² = 938923187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (943117499) 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, 157186246 + ... + 157186251.

It is an arithmetic number, because the mean of its divisors is an integer number (314372498).

Almost surely, 2^943117491 is an apocalyptic number.

943117491 is a deficient number, since it is larger than the sum of its proper divisors (314372501).

943117491 is a wasteful number, since it uses less digits than its factorization.

943117491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314372500.

The product of its digits is 27216, while the sum is 39.

The square root of 943117491 is about 30710.2180226712. The cubic root of 943117491 is about 980.6678395924.

The spelling of 943117491 in words is "nine hundred forty-three million, one hundred seventeen thousand, four hundred ninety-one".