894428563 has 4 divisors (see below), whose sum is σ = 1022204080. Its totient is φ = 766653048.

The previous prime is 894428539. The next prime is 894428573. The reversal of 894428563 is 365824498.

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

It is a de Polignac number, because none of the positive numbers 2^k-894428563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (894428503) 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, 63887748 + ... + 63887761.

It is an arithmetic number, because the mean of its divisors is an integer number (255551020).

Almost surely, 2^894428563 is an apocalyptic number.

894428563 is a deficient number, since it is larger than the sum of its proper divisors (127775517).

894428563 is a wasteful number, since it uses less digits than its factorization.

894428563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127775516.

The product of its digits is 1658880, while the sum is 49.

The square root of 894428563 is about 29906.9985622095. The cubic root of 894428563 is about 963.4929766462.

The spelling of 894428563 in words is "eight hundred ninety-four million, four hundred twenty-eight thousand, five hundred sixty-three".