1090396043 has 4 divisors (see below), whose sum is σ = 1189522968. Its totient is φ = 991269120.

The previous prime is 1090396009. The next prime is 1090396057. The reversal of 1090396043 is 3406930901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3406930901 = 11 ⋅309720991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090396043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1090395994 and 1090396012.

It is not an unprimeable number, because it can be changed into a prime (1090396003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49563446 + ... + 49563467.

It is an arithmetic number, because the mean of its divisors is an integer number (297380742).

Almost surely, 2^1090396043 is an apocalyptic number.

1090396043 is a deficient number, since it is larger than the sum of its proper divisors (99126925).

1090396043 is an equidigital number, since it uses as much as digits as its factorization.

1090396043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99126924.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1090396043 is about 33021.1453920060. The cubic root of 1090396043 is about 1029.2670951084.

The spelling of 1090396043 in words is "one billion, ninety million, three hundred ninety-six thousand, forty-three".