111029389 has 2 divisors, whose sum is σ = 111029390. Its totient is φ = 111029388.

The previous prime is 111029381. The next prime is 111029437. The reversal of 111029389 is 983920111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 19731364 = 9555^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 111029389 - 2³ = 111029381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111029381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55514694 + 55514695.

It is an arithmetic number, because the mean of its divisors is an integer number (55514695).

Almost surely, 2^111029389 is an apocalyptic number.

It is an amenable number.

111029389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111029389 is an equidigital number, since it uses as much as digits as its factorization.

111029389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 111029389 is about 10537.0484007620. The cubic root of 111029389 is about 480.6319641815.

The spelling of 111029389 in words is "one hundred eleven million, twenty-nine thousand, three hundred eighty-nine".