8407047491 has 4 divisors (see below), whose sum is σ = 8411077872. Its totient is φ = 8403017112.

The previous prime is 8407047443. The next prime is 8407047503. The reversal of 8407047491 is 1947407048.

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 8407047491 - 2¹⁴ = 8407031107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8407047421) 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, 2012060 + ... + 2016233.

It is an arithmetic number, because the mean of its divisors is an integer number (2102769468).

Almost surely, 2^8407047491 is an apocalyptic number.

8407047491 is a deficient number, since it is larger than the sum of its proper divisors (4030381).

8407047491 is a wasteful number, since it uses less digits than its factorization.

8407047491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030380.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 8407047491 is about 91689.9530537561. The cubic root of 8407047491 is about 2033.3610502866.

The spelling of 8407047491 in words is "eight billion, four hundred seven million, forty-seven thousand, four hundred ninety-one".