8456387473 has 4 divisors (see below), whose sum is σ = 8662640868. Its totient is φ = 8250134080.

The previous prime is 8456387453. The next prime is 8456387507. The reversal of 8456387473 is 3747836548.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2642782464 + 5813605009 = 51408^2 + 76247^2 .

It is a cyclic number.

It is not a de Polignac number, because 8456387473 - 2¹⁷ = 8456256401 is a prime.

It is a super-2 number, since 2×8456387473² (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 (8456387413) 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, 103126636 + ... + 103126717.

It is an arithmetic number, because the mean of its divisors is an integer number (2165660217).

Almost surely, 2^8456387473 is an apocalyptic number.

It is an amenable number.

8456387473 is a deficient number, since it is larger than the sum of its proper divisors (206253395).

8456387473 is a wasteful number, since it uses less digits than its factorization.

8456387473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206253394.

The product of its digits is 13547520, while the sum is 55.

The square root of 8456387473 is about 91958.6182638691. The cubic root of 8456387473 is about 2037.3311467232.

The spelling of 8456387473 in words is "eight billion, four hundred fifty-six million, three hundred eighty-seven thousand, four hundred seventy-three".