9073899521 has 4 divisors (see below), whose sum is σ = 9551473200. Its totient is φ = 8596325844.

The previous prime is 9073899469. The next prime is 9073899551. The reversal of 9073899521 is 1259983709.

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 a de Polignac number, because none of the positive numbers 2^k-9073899521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9073899551) 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, 238786811 + ... + 238786848.

It is an arithmetic number, because the mean of its divisors is an integer number (2387868300).

Almost surely, 2^9073899521 is an apocalyptic number.

It is an amenable number.

9073899521 is a deficient number, since it is larger than the sum of its proper divisors (477573679).

9073899521 is a wasteful number, since it uses less digits than its factorization.

9073899521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477573678.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 9073899521 is about 95257.0182243807. The cubic root of 9073899521 is about 2085.7615408301.

The spelling of 9073899521 in words is "nine billion, seventy-three million, eight hundred ninety-nine thousand, five hundred twenty-one".