11959945 has 8 divisors (see below), whose sum is σ = 14374080. Its totient is φ = 9553200.

The previous prime is 11959939. The next prime is 11959951. The reversal of 11959945 is 54995911.

It is an interprime number because it is at equal distance from previous prime (11959939) and next prime (11959951).

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

It is not a de Polignac number, because 11959945 - 2¹⁵ = 11927177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 5620.

It is an arithmetic number, because the mean of its divisors is an integer number (1796760).

Almost surely, 2^11959945 is an apocalyptic number.

It is an amenable number.

11959945 is a deficient number, since it is larger than the sum of its proper divisors (2414135).

11959945 is an equidigital number, since it uses as much as digits as its factorization.

11959945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its digits is 72900, while the sum is 43.

The square root of 11959945 is about 3458.3153413187. The cubic root of 11959945 is about 228.6878338440.

The spelling of 11959945 in words is "eleven million, nine hundred fifty-nine thousand, nine hundred forty-five".