1141639999 has 4 divisors (see below), whose sum is σ = 1141915320. Its totient is φ = 1141364680.

The previous prime is 1141639991. The next prime is 1141640009. The reversal of 1141639999 is 9999361411.

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

It is a cyclic number.

It is not a de Polignac number, because 1141639999 - 2³ = 1141639991 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 (1141639991) 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 3 ways as a sum of consecutive naturals, for example, 131344 + ... + 139765.

It is an arithmetic number, because the mean of its divisors is an integer number (285478830).

Almost surely, 2^1141639999 is an apocalyptic number.

1141639999 is a deficient number, since it is larger than the sum of its proper divisors (275321).

1141639999 is an equidigital number, since it uses as much as digits as its factorization.

1141639999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275320.

The product of its digits is 472392, while the sum is 52.

The square root of 1141639999 is about 33788.1635931875. The cubic root of 1141639999 is about 1045.1446268545.

It can be divided in two parts, 11416 and 39999, that added together give a palindrome (51415).

The spelling of 1141639999 in words is "one billion, one hundred forty-one million, six hundred thirty-nine thousand, nine hundred ninety-nine".