11971485 has 24 divisors (see below), whose sum is σ = 21972600. Its totient is φ = 6008832.

The previous prime is 11971469. The next prime is 11971499. The reversal of 11971485 is 58417911.

It can be written as a sum of positive squares in 4 ways, for example, as 962361 + 11009124 = 981^2 + 3318^2 .

It is not a de Polignac number, because 11971485 - 2⁴ = 11971469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7060 + ... + 8589.

It is an arithmetic number, because the mean of its divisors is an integer number (915525).

Almost surely, 2^11971485 is an apocalyptic number.

11971485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11971485 is a deficient number, since it is larger than the sum of its proper divisors (10001115).

11971485 is a wasteful number, since it uses less digits than its factorization.

11971485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15677 (or 15674 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 11971485 is about 3459.9833814630. The cubic root of 11971485 is about 228.7613628683.

The spelling of 11971485 in words is "eleven million, nine hundred seventy-one thousand, four hundred eighty-five".