873809523 has 12 divisors (see below), whose sum is σ = 1264810560. Its totient is φ = 581320656.

The previous prime is 873809513. The next prime is 873809539. The reversal of 873809523 is 325908378.

It is not a de Polignac number, because 873809523 - 2⁶ = 873809459 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (873809513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97036 + ... + 105657.

It is an arithmetic number, because the mean of its divisors is an integer number (105400880).

Almost surely, 2^873809523 is an apocalyptic number.

873809523 is a deficient number, since it is larger than the sum of its proper divisors (391001037).

873809523 is a wasteful number, since it uses less digits than its factorization.

873809523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203178 (or 203175 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 873809523 is about 29560.2693323319. The cubic root of 873809523 is about 956.0316229772.

The spelling of 873809523 in words is "eight hundred seventy-three million, eight hundred nine thousand, five hundred twenty-three".