911289139 has 2 divisors, whose sum is σ = 911289140. Its totient is φ = 911289138.

The previous prime is 911289037. The next prime is 911289173. The reversal of 911289139 is 931982119.

911289139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 911289139 - 2²⁹ = 374418227 is a prime.

It is a super-2 number, since 2×911289139² = 1660895789718722642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 911289095 and 911289104.

It is not a weakly prime, because it can be changed into another prime (911589139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455644569 + 455644570.

It is an arithmetic number, because the mean of its divisors is an integer number (455644570).

Almost surely, 2^911289139 is an apocalyptic number.

911289139 is a deficient number, since it is larger than the sum of its proper divisors (1).

911289139 is an equidigital number, since it uses as much as digits as its factorization.

911289139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 43.

The square root of 911289139 is about 30187.5659668016. The cubic root of 911289139 is about 969.5094905493.

The spelling of 911289139 in words is "nine hundred eleven million, two hundred eighty-nine thousand, one hundred thirty-nine".