1141399 has 12 divisors (see below), whose sum is σ = 1350832. Its totient is φ = 944640.

The previous prime is 1141391. The next prime is 1141417. The reversal of 1141399 is 9931411.

It is a happy number.

It is not a de Polignac number, because 1141399 - 2³ = 1141391 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141391) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11719 + ... + 11815.

2^1141399 is an apocalyptic number.

1141399 is a deficient number, since it is larger than the sum of its proper divisors (209433).

1141399 is an frugal number, since it uses more digits than its factorization.

1141399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 145 counting only the distinct ones).

The product of its digits is 972, while the sum is 28.

The square root of 1141399 is about 1068.3627661052. The cubic root of 1141399 is about 104.5071078703.

It can be divided in two parts, 1141 and 399, that added together give a triangular number (1540 = T₅₅).

The spelling of 1141399 in words is "one million, one hundred forty-one thousand, three hundred ninety-nine".