869244985 has 24 divisors (see below), whose sum is σ = 1234673856. Its totient is φ = 575480640.

The previous prime is 869244953. The next prime is 869244989. The reversal of 869244985 is 589442968.

It is not a de Polignac number, because 869244985 - 2⁵ = 869244953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869244989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14670 + ... + 44200.

It is an arithmetic number, because the mean of its divisors is an integer number (51444744).

Almost surely, 2^869244985 is an apocalyptic number.

It is an amenable number.

869244985 is a deficient number, since it is larger than the sum of its proper divisors (365428871).

869244985 is a wasteful number, since it uses less digits than its factorization.

869244985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29601 (or 29572 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 869244985 is about 29482.9609266098. The cubic root of 869244985 is about 954.3640347955.

The spelling of 869244985 in words is "eight hundred sixty-nine million, two hundred forty-four thousand, nine hundred eighty-five".