947040491 has 4 divisors (see below), whose sum is σ = 952331400. Its totient is φ = 941749584.

The previous prime is 947040487. The next prime is 947040587. The reversal of 947040491 is 194040749.

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 947040491 - 2² = 947040487 is a prime.

It is a super-4 number, since 4×947040491⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947540491) 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, 2645186 + ... + 2645543.

It is an arithmetic number, because the mean of its divisors is an integer number (238082850).

Almost surely, 2^947040491 is an apocalyptic number.

947040491 is a deficient number, since it is larger than the sum of its proper divisors (5290909).

947040491 is a wasteful number, since it uses less digits than its factorization.

947040491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290908.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 947040491 is about 30774.0229901779. The cubic root of 947040491 is about 982.0256902091.

The spelling of 947040491 in words is "nine hundred forty-seven million, forty thousand, four hundred ninety-one".