8274729 has 4 divisors (see below), whose sum is σ = 11032976. Its totient is φ = 5516484.

The previous prime is 8274727. The next prime is 8274751. The reversal of 8274729 is 9274728.

8274729 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8274729 - 2¹ = 8274727 is a prime.

It is a super-2 number, since 2×8274729² = 136942280046882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8274727) 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, 1379119 + ... + 1379124.

It is an arithmetic number, because the mean of its divisors is an integer number (2758244).

Almost surely, 2^8274729 is an apocalyptic number.

It is an amenable number.

8274729 is a deficient number, since it is larger than the sum of its proper divisors (2758247).

8274729 is a wasteful number, since it uses less digits than its factorization.

8274729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758246.

The product of its digits is 56448, while the sum is 39.

The square root of 8274729 is about 2876.5828686134. The cubic root of 8274729 is about 202.2636902016.

Subtracting 8274729 from its reverse (9274728), we obtain a palindrome (999999).

The spelling of 8274729 in words is "eight million, two hundred seventy-four thousand, seven hundred twenty-nine".