1103984639 has 4 divisors (see below), whose sum is σ = 1104075840. Its totient is φ = 1103893440.

The previous prime is 1103984603. The next prime is 1103984663. The reversal of 1103984639 is 9364893011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9364893011 = 5171 ⋅1811041.

It is a cyclic number.

It is not a de Polignac number, because 1103984639 - 2¹² = 1103980543 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 1103984639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103984669) 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, 24047 + ... + 52784.

It is an arithmetic number, because the mean of its divisors is an integer number (276018960).

Almost surely, 2^1103984639 is an apocalyptic number.

1103984639 is a deficient number, since it is larger than the sum of its proper divisors (91201).

1103984639 is an equidigital number, since it uses as much as digits as its factorization.

1103984639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91200.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1103984639 is about 33226.2642949821. The cubic root of 1103984639 is about 1033.5250569565.

The spelling of 1103984639 in words is "one billion, one hundred three million, nine hundred eighty-four thousand, six hundred thirty-nine".