869924005 has 4 divisors (see below), whose sum is σ = 1043908812. Its totient is φ = 695939200.

The previous prime is 869923997. The next prime is 869924023. The reversal of 869924005 is 500429968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 464747364 + 405176641 = 21558^2 + 20129^2 .

It is not a de Polignac number, because 869924005 - 2³ = 869923997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86992396 + ... + 86992405.

It is an arithmetic number, because the mean of its divisors is an integer number (260977203).

Almost surely, 2^869924005 is an apocalyptic number.

It is an amenable number.

869924005 is a deficient number, since it is larger than the sum of its proper divisors (173984807).

869924005 is a wasteful number, since it uses less digits than its factorization.

869924005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173984806.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 869924005 is about 29494.4741434730. The cubic root of 869924005 is about 954.6124740012.

The spelling of 869924005 in words is "eight hundred sixty-nine million, nine hundred twenty-four thousand, five".