1089901 has 4 divisors (see below), whose sum is σ = 1137312. Its totient is φ = 1042492.

The previous prime is 1089877. The next prime is 1089917. The reversal of 1089901 is 1099801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1099801 = 409 ⋅2689.

It is a cyclic number.

It is not a de Polignac number, because 1089901 - 2¹³ = 1081709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1089901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23671 + ... + 23716.

It is an arithmetic number, because the mean of its divisors is an integer number (284328).

2^1089901 is an apocalyptic number.

It is an amenable number.

1089901 is a deficient number, since it is larger than the sum of its proper divisors (47411).

1089901 is an equidigital number, since it uses as much as digits as its factorization.

1089901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47410.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1089901 is about 1043.9832374133. The cubic root of 1089901 is about 102.9111308104.

It can be divided in two parts, 1089 and 901, that multiplied together give a palindrome (981189).

The spelling of 1089901 in words is "one million, eighty-nine thousand, nine hundred one".