11983895 has 32 divisors (see below), whose sum is σ = 18994176. Its totient is φ = 7027200.

The previous prime is 11983879. The next prime is 11983901. The reversal of 11983895 is 59838911.

11983895 = 291² + 292² + ... + 392².

It is a happy number.

It is not a de Polignac number, because 11983895 - 2⁴ = 11983879 is a prime.

It is a super-2 number, since 2×11983895² = 287227478742050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5630 + ... + 7460.

It is an arithmetic number, because the mean of its divisors is an integer number (593568).

Almost surely, 2^11983895 is an apocalyptic number.

11983895 is a deficient number, since it is larger than the sum of its proper divisors (7010281).

11983895 is a wasteful number, since it uses less digits than its factorization.

11983895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

The product of its digits is 77760, while the sum is 44.

The square root of 11983895 is about 3461.7762781555. The cubic root of 11983895 is about 228.8403825306.

The spelling of 11983895 in words is "eleven million, nine hundred eighty-three thousand, eight hundred ninety-five".