7840460491 has 4 divisors (see below), whose sum is σ = 7950889584. Its totient is φ = 7730031400.

The previous prime is 7840460477. The next prime is 7840460497. The reversal of 7840460491 is 1940640487.

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 7840460491 - 2¹¹ = 7840458443 is a prime.

It is a super-2 number, since 2×7840460491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7840460497) 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, 55214440 + ... + 55214581.

It is an arithmetic number, because the mean of its divisors is an integer number (1987722396).

Almost surely, 2^7840460491 is an apocalyptic number.

7840460491 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

7840460491 is a deficient number, since it is larger than the sum of its proper divisors (110429093).

7840460491 is a wasteful number, since it uses less digits than its factorization.

7840460491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110429092.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 7840460491 is about 88546.3748043928. The cubic root of 7840460491 is about 1986.6156705858.

The spelling of 7840460491 in words is "seven billion, eight hundred forty million, four hundred sixty thousand, four hundred ninety-one".