1139398 has 12 divisors (see below), whose sum is σ = 1851228. Its totient is φ = 525720.

The previous prime is 1139393. The next prime is 1139407. The reversal of 1139398 is 8939311.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1348 + ... + 2023.

It is an arithmetic number, because the mean of its divisors is an integer number (154269).

2^1139398 is an apocalyptic number.

1139398 is a deficient number, since it is larger than the sum of its proper divisors (711830).

1139398 is a wasteful number, since it uses less digits than its factorization.

1139398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399 (or 3386 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 1139398 is about 1067.4258756466. The cubic root of 1139398 is about 104.4460012678.

The spelling of 1139398 in words is "one million, one hundred thirty-nine thousand, three hundred ninety-eight".