1126879621 has 8 divisors (see below), whose sum is σ = 1304165120. Its totient is φ = 953669808.

The previous prime is 1126879619. The next prime is 1126879627. The reversal of 1126879621 is 1269786211.

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

It is not a de Polignac number, because 1126879621 - 2¹ = 1126879619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126879627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018326 + ... + 1019431.

It is an arithmetic number, because the mean of its divisors is an integer number (163020640).

Almost surely, 2^1126879621 is an apocalyptic number.

It is an amenable number.

1126879621 is a deficient number, since it is larger than the sum of its proper divisors (177285499).

1126879621 is an equidigital number, since it uses as much as digits as its factorization.

1126879621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037843.

The product of its digits is 72576, while the sum is 43.

The square root of 1126879621 is about 33569.0277041204. The cubic root of 1126879621 is about 1040.6208143122.

The spelling of 1126879621 in words is "one billion, one hundred twenty-six million, eight hundred seventy-nine thousand, six hundred twenty-one".