29040590569 has 3 divisors (see below), whose sum is σ = 29040760983. Its totient is φ = 29040420156.

The previous prime is 29040590549. The next prime is 29040590587. The reversal of 29040590569 is 96509504092.

The square root of 29040590569 is 170413.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3372705625 + 25667884944 = 58075^2 + 160212^2 .

It is a de Polignac number, because none of the positive numbers 2^k-29040590569 is a prime.

It is a super-2 number, since 2×29040590569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29040590519) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85207 + ... + 255619.

It is an arithmetic number, because the mean of its divisors is an integer number (9680253661).

Almost surely, 2^29040590569 is an apocalyptic number.

29040590569 is the 170413-rd square number.

29040590569 is the 85207-th centered octagonal number.

It is an amenable number.

29040590569 is a deficient number, since it is larger than the sum of its proper divisors (170414).

29040590569 is an frugal number, since it uses more digits than its factorization.

29040590569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340826 (or 170413 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 49.

Multiplying 29040590569 by its sum of digits (49), we get a square (1422988937881 = 1192891²).

The spelling of 29040590569 in words is "twenty-nine billion, forty million, five hundred ninety thousand, five hundred sixty-nine".