845246729 has 4 divisors (see below), whose sum is σ = 849494400. Its totient is φ = 840999060.

The previous prime is 845246719. The next prime is 845246747. The reversal of 845246729 is 927642548.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-845246729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845246719) 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, 2123537 + ... + 2123934.

It is an arithmetic number, because the mean of its divisors is an integer number (212373600).

Almost surely, 2^845246729 is an apocalyptic number.

It is an amenable number.

845246729 is a deficient number, since it is larger than the sum of its proper divisors (4247671).

845246729 is a wasteful number, since it uses less digits than its factorization.

845246729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247670.

The product of its digits is 967680, while the sum is 47.

The square root of 845246729 is about 29073.1272655695. The cubic root of 845246729 is about 945.4992011752.

The spelling of 845246729 in words is "eight hundred forty-five million, two hundred forty-six thousand, seven hundred twenty-nine".