1138393 has 2 divisors, whose sum is σ = 1138394. Its totient is φ = 1138392.

The previous prime is 1138391. The next prime is 1138409. The reversal of 1138393 is 3938311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 29584 = 1053^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138393 - 2¹ = 1138391 is a prime.

Together with 1138391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1138391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569196 + 569197.

It is an arithmetic number, because the mean of its divisors is an integer number (569197).

2^1138393 is an apocalyptic number.

It is an amenable number.

1138393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138393 is an equidigital number, since it uses as much as digits as its factorization.

1138393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 1138393 is about 1066.9550131097. The cubic root of 1138393 is about 104.4152835529.

It can be divided in two parts, 11383 and 93, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 1138393 in words is "one million, one hundred thirty-eight thousand, three hundred ninety-three".