456220729 has 4 divisors (see below), whose sum is σ = 456408720. Its totient is φ = 456032740.

The previous prime is 456220711. The next prime is 456220733. The reversal of 456220729 is 927022654.

It is a happy number.

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 not a de Polignac number, because 456220729 - 2⁵ = 456220697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (456220829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90307 + ... + 95224.

It is an arithmetic number, because the mean of its divisors is an integer number (114102180).

Almost surely, 2^456220729 is an apocalyptic number.

It is an amenable number.

456220729 is a deficient number, since it is larger than the sum of its proper divisors (187991).

456220729 is a wasteful number, since it uses less digits than its factorization.

456220729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187990.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 456220729 is about 21359.3241700200. The cubic root of 456220729 is about 769.8243985914.

The spelling of 456220729 in words is "four hundred fifty-six million, two hundred twenty thousand, seven hundred twenty-nine".