11139985 has 16 divisors (see below), whose sum is σ = 14184000. Its totient is φ = 8375616.

The previous prime is 11139979. The next prime is 11139991. The reversal of 11139985 is 58993111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11139979) and next prime (11139991).

It is a cyclic number.

It is not a de Polignac number, because 11139985 - 2¹⁹ = 10615697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13762 + ... + 14548.

It is an arithmetic number, because the mean of its divisors is an integer number (886500).

Almost surely, 2^11139985 is an apocalyptic number.

It is an amenable number.

11139985 is a deficient number, since it is larger than the sum of its proper divisors (3044015).

11139985 is a wasteful number, since it uses less digits than its factorization.

11139985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its digits is 9720, while the sum is 37.

The square root of 11139985 is about 3337.6616065743. The cubic root of 11139985 is about 223.3374408294.

The spelling of 11139985 in words is "eleven million, one hundred thirty-nine thousand, nine hundred eighty-five".