1105439990 has 16 divisors (see below), whose sum is σ = 1998718848. Its totient is φ = 440192256.

The previous prime is 1105439917. The next prime is 1105439999. The reversal of 1105439990 is 999345011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105439999) 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 7 ways as a sum of consecutive naturals, for example, 245627 + ... + 250086.

It is an arithmetic number, because the mean of its divisors is an integer number (124919928).

Almost surely, 2^1105439990 is an apocalyptic number.

1105439990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1105439990 is a deficient number, since it is larger than the sum of its proper divisors (893278858).

1105439990 is a wasteful number, since it uses less digits than its factorization.

1105439990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495943.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1105439990 is about 33248.1576933219. The cubic root of 1105439990 is about 1033.9790129266.

The spelling of 1105439990 in words is "one billion, one hundred five million, four hundred thirty-nine thousand, nine hundred ninety".