873074989 has 4 divisors (see below), whose sum is σ = 889548156. Its totient is φ = 856601824.

The previous prime is 873074971. The next prime is 873075011. The reversal of 873074989 is 989470378.

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 386122500 + 486952489 = 19650^2 + 22067^2 .

It is a cyclic number.

It is not a de Polignac number, because 873074989 - 2¹⁵ = 873042221 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 (873074929) 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, 8236504 + ... + 8236609.

It is an arithmetic number, because the mean of its divisors is an integer number (222387039).

Almost surely, 2^873074989 is an apocalyptic number.

It is an amenable number.

873074989 is a deficient number, since it is larger than the sum of its proper divisors (16473167).

873074989 is a wasteful number, since it uses less digits than its factorization.

873074989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16473166.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 873074989 is about 29547.8423746980. The cubic root of 873074989 is about 955.7636642764.

The spelling of 873074989 in words is "eight hundred seventy-three million, seventy-four thousand, nine hundred eighty-nine".