1138429 has 2 divisors, whose sum is σ = 1138430. Its totient is φ = 1138428.

The previous prime is 1138427. The next prime is 1138433. The reversal of 1138429 is 9248311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 273529 = 930^2 + 523^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138429 - 2¹ = 1138427 is a prime.

Together with 1138427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1138397 and 1138406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569214 + 569215.

It is an arithmetic number, because the mean of its divisors is an integer number (569215).

2^1138429 is an apocalyptic number.

It is an amenable number.

1138429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138429 is an equidigital number, since it uses as much as digits as its factorization.

1138429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 1138429 is about 1066.9718834159. The cubic root of 1138429 is about 104.4163842011.

The spelling of 1138429 in words is "one million, one hundred thirty-eight thousand, four hundred twenty-nine".