8464547540 has 12 divisors (see below), whose sum is σ = 17775549876. Its totient is φ = 3385819008.

The previous prime is 8464547477. The next prime is 8464547617. The reversal of 8464547540 is 457454648.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6572993476 + 1891554064 = 81074^2 + 43492^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211613669 + ... + 211613708.

It is an arithmetic number, because the mean of its divisors is an integer number (1481295823).

Almost surely, 2^8464547540 is an apocalyptic number.

It is an amenable number.

8464547540 is an abundant number, since it is smaller than the sum of its proper divisors (9311002336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8464547540 is a wasteful number, since it uses less digits than its factorization.

8464547540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423227386 (or 423227384 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 47.

The square root of 8464547540 is about 92002.9757127453. The cubic root of 8464547540 is about 2037.9862497118.

The spelling of 8464547540 in words is "eight billion, four hundred sixty-four million, five hundred forty-seven thousand, five hundred forty".