1127639129 has 2 divisors, whose sum is σ = 1127639130. Its totient is φ = 1127639128.

The previous prime is 1127639099. The next prime is 1127639141. The reversal of 1127639129 is 9219367211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856147600 + 271491529 = 29260^2 + 16477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1127639129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127639179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563819564 + 563819565.

It is an arithmetic number, because the mean of its divisors is an integer number (563819565).

Almost surely, 2^1127639129 is an apocalyptic number.

It is an amenable number.

1127639129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127639129 is an equidigital number, since it uses as much as digits as its factorization.

1127639129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 1127639129 is about 33580.3384289081. The cubic root of 1127639129 is about 1040.8545518886.

It can be divided in two parts, 11276 and 39129, that added together give a palindrome (50405).

The spelling of 1127639129 in words is "one billion, one hundred twenty-seven million, six hundred thirty-nine thousand, one hundred twenty-nine".