1139554 has 16 divisors (see below), whose sum is σ = 1887480. Its totient is φ = 512640.

The previous prime is 1139549. The next prime is 1139557. The reversal of 1139554 is 4559311.

It can be written as a sum of positive squares in 4 ways, for example, as 455625 + 683929 = 675^2 + 827^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532 + ... + 1600.

2^1139554 is an apocalyptic number.

1139554 is a deficient number, since it is larger than the sum of its proper divisors (747926).

1139554 is a wasteful number, since it uses less digits than its factorization.

1139554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its digits is 2700, while the sum is 28.

The square root of 1139554 is about 1067.4989461353. The cubic root of 1139554 is about 104.4507677710.

It can be divided in two parts, 11395 and 54, that added together give a square (11449 = 107²).

The spelling of 1139554 in words is "one million, one hundred thirty-nine thousand, five hundred fifty-four".