113905945 has 4 divisors (see below), whose sum is σ = 136687140. Its totient is φ = 91124752.

The previous prime is 113905901. The next prime is 113905951. The reversal of 113905945 is 549509311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28472896 + 85433049 = 5336^2 + 9243^2 .

It is a cyclic number.

It is not a de Polignac number, because 113905945 - 2⁹ = 113905433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11390590 + ... + 11390599.

It is an arithmetic number, because the mean of its divisors is an integer number (34171785).

Almost surely, 2^113905945 is an apocalyptic number.

It is an amenable number.

113905945 is a deficient number, since it is larger than the sum of its proper divisors (22781195).

113905945 is an equidigital number, since it uses as much as digits as its factorization.

113905945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22781194.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 113905945 is about 10672.6728142485. The cubic root of 113905945 is about 484.7473725967.

The spelling of 113905945 in words is "one hundred thirteen million, nine hundred five thousand, nine hundred forty-five".