873998653 has 4 divisors (see below), whose sum is σ = 953453088. Its totient is φ = 794544220.

The previous prime is 873998641. The next prime is 873998663. The reversal of 873998653 is 356899378.

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 873998653 - 2⁵ = 873998621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873998603) 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 3 ways as a sum of consecutive naturals, for example, 39727201 + ... + 39727222.

It is an arithmetic number, because the mean of its divisors is an integer number (238363272).

Almost surely, 2^873998653 is an apocalyptic number.

It is an amenable number.

873998653 is a deficient number, since it is larger than the sum of its proper divisors (79454435).

873998653 is a wasteful number, since it uses less digits than its factorization.

873998653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79454434.

The product of its digits is 9797760, while the sum is 58.

The square root of 873998653 is about 29563.4682167029. The cubic root of 873998653 is about 956.1005934688.

The spelling of 873998653 in words is "eight hundred seventy-three million, nine hundred ninety-eight thousand, six hundred fifty-three".