11309945 has 8 divisors (see below), whose sum is σ = 13763520. Its totient is φ = 8920240.

The previous prime is 11309941. The next prime is 11309953. The reversal of 11309945 is 54990311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11309945 - 2² = 11309941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11309941) 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 7 ways as a sum of consecutive naturals, for example, 15575 + ... + 16284.

It is an arithmetic number, because the mean of its divisors is an integer number (1720440).

Almost surely, 2^11309945 is an apocalyptic number.

It is an amenable number.

11309945 is a deficient number, since it is larger than the sum of its proper divisors (2453575).

11309945 is an equidigital number, since it uses as much as digits as its factorization.

11309945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31935.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 11309945 is about 3363.0261670109. The cubic root of 11309945 is about 224.4675144752.

The spelling of 11309945 in words is "eleven million, three hundred nine thousand, nine hundred forty-five".