11953965 has 8 divisors (see below), whose sum is σ = 19126368. Its totient is φ = 6375440.

The previous prime is 11953961. The next prime is 11953967. The reversal of 11953965 is 56935911.

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

It is not a de Polignac number, because 11953965 - 2² = 11953961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11953961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398451 + ... + 398480.

It is an arithmetic number, because the mean of its divisors is an integer number (2390796).

Almost surely, 2^11953965 is an apocalyptic number.

11953965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11953965 is a deficient number, since it is larger than the sum of its proper divisors (7172403).

11953965 is an equidigital number, since it uses as much as digits as its factorization.

11953965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796939.

The product of its digits is 36450, while the sum is 39.

The square root of 11953965 is about 3457.4506504070. The cubic root of 11953965 is about 228.6497126755.

The spelling of 11953965 in words is "eleven million, nine hundred fifty-three thousand, nine hundred sixty-five".