1126705889 has 4 divisors (see below), whose sum is σ = 1192982724. Its totient is φ = 1060429056.

The previous prime is 1126705861. The next prime is 1126705891. The reversal of 1126705889 is 9885076211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 355699600 + 771006289 = 18860^2 + 27767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126705889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126705589) 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, 33138392 + ... + 33138425.

It is an arithmetic number, because the mean of its divisors is an integer number (298245681).

Almost surely, 2^1126705889 is an apocalyptic number.

It is an amenable number.

1126705889 is a deficient number, since it is larger than the sum of its proper divisors (66276835).

1126705889 is an equidigital number, since it uses as much as digits as its factorization.

1126705889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66276834.

The product of its (nonzero) digits is 241920, while the sum is 47.

The square root of 1126705889 is about 33566.4399214453. The cubic root of 1126705889 is about 1040.5673337619.

The spelling of 1126705889 in words is "one billion, one hundred twenty-six million, seven hundred five thousand, eight hundred eighty-nine".