8457047 has 8 divisors (see below), whose sum is σ = 8618400. Its totient is φ = 8297344.

The previous prime is 8457037. The next prime is 8457049. The reversal of 8457047 is 7407548.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8457047 - 2¹⁸ = 8194903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8456998 and 8457016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14579 + ... + 15147.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^8457047 is an apocalyptic number.

8457047 is a deficient number, since it is larger than the sum of its proper divisors (161353).

8457047 is a wasteful number, since it uses less digits than its factorization.

8457047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 8457047 is about 2908.1002389876. The cubic root of 8457047 is about 203.7384110236.

It can be divided in two parts, 84570 and 47, that multiplied together give a triangular number (3974790 = T₂₈₁₉).

The spelling of 8457047 in words is "eight million, four hundred fifty-seven thousand, forty-seven".