894580991 has 4 divisors (see below), whose sum is σ = 897235872. Its totient is φ = 891926112.

The previous prime is 894580979. The next prime is 894580993. The reversal of 894580991 is 199085498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199085498 = 2 ⋅99542749.

It is a cyclic number.

It is not a de Polignac number, because 894580991 - 2¹⁴ = 894564607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894580993) 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, 1326935 + ... + 1327608.

It is an arithmetic number, because the mean of its divisors is an integer number (224308968).

Almost surely, 2^894580991 is an apocalyptic number.

894580991 is a deficient number, since it is larger than the sum of its proper divisors (2654881).

894580991 is a wasteful number, since it uses less digits than its factorization.

894580991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654880.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 894580991 is about 29909.5468203716. The cubic root of 894580991 is about 963.5477061765.

The spelling of 894580991 in words is "eight hundred ninety-four million, five hundred eighty thousand, nine hundred ninety-one".