9021297924 has 18 divisors (see below), whose sum is σ = 22803836510. Its totient is φ = 3007099296.

The previous prime is 9021297917. The next prime is 9021297949. The reversal of 9021297924 is 4297921209.

It can be written as a sum of positive squares in only one way, i.e., 8259537924 + 761760000 = 90882^2 + 27600^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 9021297924.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 125295769 + ... + 125295840.

Almost surely, 2^9021297924 is an apocalyptic number.

It is an amenable number.

9021297924 is an abundant number, since it is smaller than the sum of its proper divisors (13782538586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9021297924 is a wasteful number, since it uses less digits than its factorization.

9021297924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250591619 (or 250591614 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9021297924 is about 94980.5133909056. The cubic root of 9021297924 is about 2081.7233255526.

The spelling of 9021297924 in words is "nine billion, twenty-one million, two hundred ninety-seven thousand, nine hundred twenty-four".