1103959 has 4 divisors (see below), whose sum is σ = 1120504. Its totient is φ = 1087416.

The previous prime is 1103933. The next prime is 1103981. The reversal of 1103959 is 9593011.

1103959 = T₁₄₇ + T₁₄₈ + ... + T₂₁₃.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1103959 - 2¹⁷ = 972887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103989) 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, 8172 + ... + 8305.

It is an arithmetic number, because the mean of its divisors is an integer number (280126).

2^1103959 is an apocalyptic number.

1103959 is a deficient number, since it is larger than the sum of its proper divisors (16545).

1103959 is an equidigital number, since it uses as much as digits as its factorization.

1103959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16544.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1103959 is about 1050.6945322024. The cubic root of 1103959 is about 103.3517056014.

The spelling of 1103959 in words is "one million, one hundred three thousand, nine hundred fifty-nine".