11889965 has 8 divisors (see below), whose sum is σ = 14888448. Its totient is φ = 9098320.

The previous prime is 11889961. The next prime is 11889979. The reversal of 11889965 is 56998811.

11889965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11889965 - 2² = 11889961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11889961) 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, 51581 + ... + 51810.

It is an arithmetic number, because the mean of its divisors is an integer number (1861056).

Almost surely, 2^11889965 is an apocalyptic number.

It is an amenable number.

11889965 is a deficient number, since it is larger than the sum of its proper divisors (2998483).

11889965 is a wasteful number, since it uses less digits than its factorization.

11889965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103419.

The product of its digits is 155520, while the sum is 47.

The square root of 11889965 is about 3448.1828547802. The cubic root of 11889965 is about 228.2409285048.

The spelling of 11889965 in words is "eleven million, eight hundred eighty-nine thousand, nine hundred sixty-five".