1089922 has 4 divisors (see below), whose sum is σ = 1634886. Its totient is φ = 544960.

The previous prime is 1089919. The next prime is 1089941. The reversal of 1089922 is 2299801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2299801 = 7 ⋅328543.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 6241 = 1041^2 + 79^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272479 + ... + 272482.

2^1089922 is an apocalyptic number.

1089922 is a deficient number, since it is larger than the sum of its proper divisors (544964).

1089922 is an equidigital number, since it uses as much as digits as its factorization.

1089922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544963.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1089922 is about 1043.9932949976. The cubic root of 1089922 is about 102.9117917634.

It can be divided in two parts, 10899 and 22, that multiplied together give a triangular number (239778 = T₆₉₂).

The spelling of 1089922 in words is "one million, eighty-nine thousand, nine hundred twenty-two".