1105344989 has 12 divisors (see below), whose sum is σ = 1297832544. Its totient is φ = 938579544.

The previous prime is 1105344983. The next prime is 1105344991. The reversal of 1105344989 is 9894435011.

It is not a de Polignac number, because 1105344989 - 2¹² = 1105340893 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 (1105344983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100169 + ... + 110654.

It is an arithmetic number, because the mean of its divisors is an integer number (108152712).

Almost surely, 2^1105344989 is an apocalyptic number.

It is an amenable number.

1105344989 is a deficient number, since it is larger than the sum of its proper divisors (192487555).

1105344989 is a wasteful number, since it uses less digits than its factorization.

1105344989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210944 (or 210937 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 1105344989 is about 33246.7289970006. The cubic root of 1105344989 is about 1033.9493921858.

The spelling of 1105344989 in words is "one billion, one hundred five million, three hundred forty-four thousand, nine hundred eighty-nine".