1139438 has 8 divisors (see below), whose sum is σ = 1722600. Its totient is φ = 565240.

The previous prime is 1139423. The next prime is 1139461. The reversal of 1139438 is 8349311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×1139438⁴ (a number of 25 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1139438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913 + ... + 2436.

It is an arithmetic number, because the mean of its divisors is an integer number (215325).

2^1139438 is an apocalyptic number.

1139438 is a deficient number, since it is larger than the sum of its proper divisors (583162).

1139438 is a wasteful number, since it uses less digits than its factorization.

1139438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482.

The product of its digits is 2592, while the sum is 29.

The square root of 1139438 is about 1067.4446121462. Note that the first 3 decimals coincide. The cubic root of 1139438 is about 104.4472234896.

The spelling of 1139438 in words is "one million, one hundred thirty-nine thousand, four hundred thirty-eight".