1138369 has 2 divisors, whose sum is σ = 1138370. Its totient is φ = 1138368.

The previous prime is 1138367. The next prime is 1138391. The reversal of 1138369 is 9638311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 97969 = 1020^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138369 - 2¹ = 1138367 is a prime.

It is a super-2 number, since 2×1138369² = 2591767960322, which contains 22 as substring.

Together with 1138367, it forms a pair of twin primes.

It is equal to p₈₈₄₈₃ and since 1138369 and 88483 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138369.

It is not a weakly prime, because it can be changed into another prime (1138363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569184 + 569185.

It is an arithmetic number, because the mean of its divisors is an integer number (569185).

2^1138369 is an apocalyptic number.

It is an amenable number.

1138369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138369 is an equidigital number, since it uses as much as digits as its factorization.

1138369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1138369 is about 1066.9437660908. The cubic root of 1138369 is about 104.4145497746.

The spelling of 1138369 in words is "one million, one hundred thirty-eight thousand, three hundred sixty-nine".