899981441 has 4 divisors (see below), whose sum is σ = 902875584. Its totient is φ = 897087300.

The previous prime is 899981431. The next prime is 899981473. The reversal of 899981441 is 144189998.

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 899981441 - 2²⁶ = 832872577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899981431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1446605 + ... + 1447226.

It is an arithmetic number, because the mean of its divisors is an integer number (225718896).

Almost surely, 2^899981441 is an apocalyptic number.

It is an amenable number.

899981441 is a deficient number, since it is larger than the sum of its proper divisors (2894143).

899981441 is a wasteful number, since it uses less digits than its factorization.

899981441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894142.

The product of its digits is 746496, while the sum is 53.

The square root of 899981441 is about 29999.6906817387. The cubic root of 899981441 is about 965.4827480721.

The spelling of 899981441 in words is "eight hundred ninety-nine million, nine hundred eighty-one thousand, four hundred forty-one".