11988495 has 12 divisors (see below), whose sum is σ = 20780136. Its totient is φ = 6393840.

The previous prime is 11988469. The next prime is 11988517. The reversal of 11988495 is 59488911.

It is not a de Polignac number, because 11988495 - 2⁵ = 11988463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 266411 = 11988495 / (1 + 1 + 9 + 8 + 8 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11988495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133161 + ... + 133250.

It is an arithmetic number, because the mean of its divisors is an integer number (1731678).

Almost surely, 2^11988495 is an apocalyptic number.

11988495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11988495 is a deficient number, since it is larger than the sum of its proper divisors (8791641).

11988495 is a wasteful number, since it uses less digits than its factorization.

11988495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266422 (or 266419 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 11988495 is about 3462.4406132091. The cubic root of 11988495 is about 228.8696587968.

The spelling of 11988495 in words is "eleven million, nine hundred eighty-eight thousand, four hundred ninety-five".