894782021 has 4 divisors (see below), whose sum is σ = 1022608032. Its totient is φ = 766956012.

The previous prime is 894781997. The next prime is 894782027. The reversal of 894782021 is 120287498.

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 894782021 - 2⁶ = 894781957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 894782021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894782027) 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, 63912995 + ... + 63913008.

It is an arithmetic number, because the mean of its divisors is an integer number (255652008).

Almost surely, 2^894782021 is an apocalyptic number.

It is an amenable number.

894782021 is a deficient number, since it is larger than the sum of its proper divisors (127826011).

894782021 is a wasteful number, since it uses less digits than its factorization.

894782021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127826010.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 894782021 is about 29912.9072642563. The cubic root of 894782021 is about 963.6198768313.

The spelling of 894782021 in words is "eight hundred ninety-four million, seven hundred eighty-two thousand, twenty-one".