10938440569 has 27 divisors (see below), whose sum is σ = 12975241797. Its totient is φ = 9194452344.

The previous prime is 10938440561. The next prime is 10938440609. The reversal of 10938440569 is 96504483901.

It is a happy number.

The square root of 10938440569 is 104587.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 10938440569 - 2³ = 10938440561 is a prime.

It is a super-2 number, since 2×10938440569² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (10938440561) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49051192 + ... + 49051414.

It is an arithmetic number, because the mean of its divisors is an integer number (480564511).

Almost surely, 2^10938440569 is an apocalyptic number.

10938440569 is the 104587-th square number.

10938440569 is the 52294-th centered octagonal number.

It is an amenable number.

10938440569 is a deficient number, since it is larger than the sum of its proper divisors (2036801228).

10938440569 is an frugal number, since it uses more digits than its factorization.

10938440569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 10938440569 by its sum of digits (49), we get a square (535983587881 = 732109²).

10938440569 divided by its sum of digits (49) gives a square (223233481 = 14941²).

The spelling of 10938440569 in words is "ten billion, nine hundred thirty-eight million, four hundred forty thousand, five hundred sixty-nine".