1139445 has 12 divisors (see below), whose sum is σ = 1975116. Its totient is φ = 607680.

The previous prime is 1139423. The next prime is 1139461. The reversal of 1139445 is 5449311.

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 463761 = 822^2 + 681^2 .

It is not a de Polignac number, because 1139445 - 2¹³ = 1131253 is a prime.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 12616 + ... + 12705.

It is an arithmetic number, because the mean of its divisors is an integer number (164593).

2^1139445 is an apocalyptic number.

1139445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1139445 is a deficient number, since it is larger than the sum of its proper divisors (835671).

1139445 is a wasteful number, since it uses less digits than its factorization.

1139445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25332 (or 25329 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1139445 is about 1067.4478909998. The cubic root of 1139445 is about 104.4474373755.

The spelling of 1139445 in words is "one million, one hundred thirty-nine thousand, four hundred forty-five".