1089636829 has 2 divisors, whose sum is σ = 1089636830. Its totient is φ = 1089636828.

The previous prime is 1089636817. The next prime is 1089636883. The reversal of 1089636829 is 9286369801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1036711204 + 52925625 = 32198^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089636829 - 2²⁵ = 1056082397 is a prime.

It is a super-2 number, since 2×1089636829² = 2374616838226350482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089633829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544818414 + 544818415.

It is an arithmetic number, because the mean of its divisors is an integer number (544818415).

Almost surely, 2^1089636829 is an apocalyptic number.

It is an amenable number.

1089636829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089636829 is an equidigital number, since it uses as much as digits as its factorization.

1089636829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 1089636829 is about 33009.6475140223. The cubic root of 1089636829 is about 1029.0281558020.

The spelling of 1089636829 in words is "one billion, eighty-nine million, six hundred thirty-six thousand, eight hundred twenty-nine".