8475729 has 16 divisors (see below), whose sum is σ = 11964480. Its totient is φ = 5322240.

The previous prime is 8475721. The next prime is 8475739. The reversal of 8475729 is 9275748.

It is not a de Polignac number, because 8475729 - 2³ = 8475721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8475721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13429 + ... + 14045.

It is an arithmetic number, because the mean of its divisors is an integer number (747780).

Almost surely, 2^8475729 is an apocalyptic number.

It is an amenable number.

8475729 is a deficient number, since it is larger than the sum of its proper divisors (3488751).

8475729 is a wasteful number, since it uses less digits than its factorization.

8475729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its digits is 141120, while the sum is 42.

The square root of 8475729 is about 2911.3105296412. The cubic root of 8475729 is about 203.8883231506. Note that the first 3 decimals are identical.

The spelling of 8475729 in words is "eight million, four hundred seventy-five thousand, seven hundred twenty-nine".