2659490969 has 8 divisors (see below), whose sum is σ = 2692819080. Its totient is φ = 2626239616.

The previous prime is 2659490957. The next prime is 2659491011. The reversal of 2659490969 is 9690949562.

It can be written as a sum of positive squares in 4 ways, for example, as 17530969 + 2641960000 = 4187^2 + 51400^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2659490969 is a prime.

It is a super-2 number, since 2×2659490969² = 14145784428385117922, which 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 (2659490909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52187 + ... + 89679.

It is an arithmetic number, because the mean of its divisors is an integer number (336602385).

Almost surely, 2^2659490969 is an apocalyptic number.

It is an amenable number.

2659490969 is a deficient number, since it is larger than the sum of its proper divisors (33328111).

2659490969 is an equidigital number, since it uses as much as digits as its factorization.

2659490969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38379.

The product of its (nonzero) digits is 9447840, while the sum is 59.

The square root of 2659490969 is about 51570.2527529195. The cubic root of 2659490969 is about 1385.4775936354.

The spelling of 2659490969 in words is "two billion, six hundred fifty-nine million, four hundred ninety thousand, nine hundred sixty-nine".