1090569469 has 4 divisors (see below), whose sum is σ = 1189712160. Its totient is φ = 991426780.

The previous prime is 1090569451. The next prime is 1090569479. The reversal of 1090569469 is 9649650901.

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 not a de Polignac number, because 1090569469 - 2⁵ = 1090569437 is a prime.

It is a super-2 number, since 2×1090569469² = 2378683533429883922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090569409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49571329 + ... + 49571350.

It is an arithmetic number, because the mean of its divisors is an integer number (297428040).

Almost surely, 2^1090569469 is an apocalyptic number.

It is an amenable number.

1090569469 is a deficient number, since it is larger than the sum of its proper divisors (99142691).

1090569469 is an equidigital number, since it uses as much as digits as its factorization.

1090569469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99142690.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 1090569469 is about 33023.7712716158. The cubic root of 1090569469 is about 1029.3216600571.

The spelling of 1090569469 in words is "one billion, ninety million, five hundred sixty-nine thousand, four hundred sixty-nine".