890438897 has 8 divisors (see below), whose sum is σ = 894371040. Its totient is φ = 886515840.

The previous prime is 890438851. The next prime is 890438909. The reversal of 890438897 is 798834098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 890438897 - 2²⁰ = 889390321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890438807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253322 + ... + 256812.

It is an arithmetic number, because the mean of its divisors is an integer number (111796380).

Almost surely, 2^890438897 is an apocalyptic number.

It is an amenable number.

890438897 is a deficient number, since it is larger than the sum of its proper divisors (3932143).

890438897 is a wasteful number, since it uses less digits than its factorization.

890438897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 890438897 is about 29840.2228041280. Note that the first 3 decimals coincide. The cubic root of 890438897 is about 962.0582636381.

The spelling of 890438897 in words is "eight hundred ninety million, four hundred thirty-eight thousand, eight hundred ninety-seven".