427520803 has 4 divisors (see below), whose sum is σ = 446108688. Its totient is φ = 408932920.

The previous prime is 427520759. The next prime is 427520809. The reversal of 427520803 is 308025724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427520803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427520809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9293908 + ... + 9293953.

It is an arithmetic number, because the mean of its divisors is an integer number (111527172).

Almost surely, 2^427520803 is an apocalyptic number.

427520803 is a deficient number, since it is larger than the sum of its proper divisors (18587885).

427520803 is a wasteful number, since it uses less digits than its factorization.

427520803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18587884.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 427520803 is about 20676.5761914298. The cubic root of 427520803 is about 753.3308464211.

The spelling of 427520803 in words is "four hundred twenty-seven million, five hundred twenty thousand, eight hundred three".