896644993 has 4 divisors (see below), whose sum is σ = 896725440. Its totient is φ = 896564548.

The previous prime is 896644981. The next prime is 896645021. The reversal of 896644993 is 399446698.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-896644993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (896644393) 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, 20173 + ... + 46906.

It is an arithmetic number, because the mean of its divisors is an integer number (224181360).

Almost surely, 2^896644993 is an apocalyptic number.

It is an amenable number.

896644993 is a deficient number, since it is larger than the sum of its proper divisors (80447).

896644993 is a wasteful number, since it uses less digits than its factorization.

896644993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80446.

The product of its digits is 10077696, while the sum is 58.

The square root of 896644993 is about 29944.0310078653. The cubic root of 896644993 is about 964.2881782930.

The spelling of 896644993 in words is "eight hundred ninety-six million, six hundred forty-four thousand, nine hundred ninety-three".