9021949769 has 16 divisors (see below), whose sum is σ = 10504684800. Its totient is φ = 7588753920.

The previous prime is 9021949753. The next prime is 9021949787. The reversal of 9021949769 is 9679491209.

It is a cyclic number.

It is not a de Polignac number, because 9021949769 - 2⁴ = 9021949753 is a prime.

It is a super-2 number, since 2×9021949769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9021949969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57329 + ... + 146049.

It is an arithmetic number, because the mean of its divisors is an integer number (656542800).

Almost surely, 2^9021949769 is an apocalyptic number.

It is an amenable number.

9021949769 is a deficient number, since it is larger than the sum of its proper divisors (1482735031).

9021949769 is a wasteful number, since it uses less digits than its factorization.

9021949769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89000.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 9021949769 is about 94983.9447959496. The cubic root of 9021949769 is about 2081.7734635065.

The spelling of 9021949769 in words is "nine billion, twenty-one million, nine hundred forty-nine thousand, seven hundred sixty-nine".