1405113989 has 4 divisors (see below), whose sum is σ = 1405188960. Its totient is φ = 1405039020.

The previous prime is 1405113959. The next prime is 1405114013. The reversal of 1405113989 is 9893115041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9893115041 = 263 ⋅37616407.

It is a cyclic number.

It is not a de Polignac number, because 1405113989 - 2²⁰ = 1404065413 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 (1405113929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18584 + ... + 56174.

It is an arithmetic number, because the mean of its divisors is an integer number (351297240).

Almost surely, 2^1405113989 is an apocalyptic number.

It is an amenable number.

1405113989 is a deficient number, since it is larger than the sum of its proper divisors (74971).

1405113989 is an equidigital number, since it uses as much as digits as its factorization.

1405113989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74970.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 1405113989 is about 37484.8501264177. The cubic root of 1405113989 is about 1120.0494209166.

The spelling of 1405113989 in words is "one billion, four hundred five million, one hundred thirteen thousand, nine hundred eighty-nine".