11905487 has 4 divisors (see below), whose sum is σ = 12987816. Its totient is φ = 10823160.

The previous prime is 11905483. The next prime is 11905499. The reversal of 11905487 is 78450911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11905487 - 2² = 11905483 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 (11905483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541148 + ... + 541169.

It is an arithmetic number, because the mean of its divisors is an integer number (3246954).

Almost surely, 2^11905487 is an apocalyptic number.

11905487 is a deficient number, since it is larger than the sum of its proper divisors (1082329).

11905487 is a wasteful number, since it uses less digits than its factorization.

11905487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082328.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 11905487 is about 3450.4328713945. The cubic root of 11905487 is about 228.3402059250.

The spelling of 11905487 in words is "eleven million, nine hundred five thousand, four hundred eighty-seven".