1089481 has 2 divisors, whose sum is σ = 1089482. Its totient is φ = 1089480.

The previous prime is 1089469. The next prime is 1089497. The reversal of 1089481 is 1849801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781456 + 308025 = 884^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089481 - 2¹¹ = 1087433 is a prime.

It is a super-2 number, since 2×1089481² = 2373937698722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1089401) 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 as a sum of consecutive naturals, namely, 544740 + 544741.

It is an arithmetic number, because the mean of its divisors is an integer number (544741).

2^1089481 is an apocalyptic number.

It is an amenable number.

1089481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089481 is an equidigital number, since it uses as much as digits as its factorization.

1089481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1089481 is about 1043.7820653757. The cubic root of 1089481 is about 102.8979099680.

The spelling of 1089481 in words is "one million, eighty-nine thousand, four hundred eighty-one".