11903965 has 4 divisors (see below), whose sum is σ = 14284764. Its totient is φ = 9523168.

The previous prime is 11903953. The next prime is 11903971. The reversal of 11903965 is 56930911.

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 5583769 + 6320196 = 2363^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 11903965 - 2⁵ = 11903933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11903965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190392 + ... + 1190401.

It is an arithmetic number, because the mean of its divisors is an integer number (3571191).

Almost surely, 2^11903965 is an apocalyptic number.

It is an amenable number.

11903965 is a deficient number, since it is larger than the sum of its proper divisors (2380799).

11903965 is an equidigital number, since it uses as much as digits as its factorization.

11903965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380798.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 11903965 is about 3450.2123123078. The cubic root of 11903965 is about 228.3304751568.

The spelling of 11903965 in words is "eleven million, nine hundred three thousand, nine hundred sixty-five".