11217739 has 16 divisors (see below), whose sum is σ = 12906432. Its totient is φ = 9658368.

The previous prime is 11217737. The next prime is 11217749. The reversal of 11217739 is 93771211.

It is a cyclic number.

It is not a de Polignac number, because 11217739 - 2¹ = 11217737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11217739.

It is not an unprimeable number, because it can be changed into a prime (11217737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42522 + ... + 42784.

It is an arithmetic number, because the mean of its divisors is an integer number (806652).

Almost surely, 2^11217739 is an apocalyptic number.

11217739 is a deficient number, since it is larger than the sum of its proper divisors (1688693).

11217739 is a wasteful number, since it uses less digits than its factorization.

11217739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its digits is 2646, while the sum is 31.

The square root of 11217739 is about 3349.2893276037. The cubic root of 11217739 is about 223.8558476756.

The spelling of 11217739 in words is "eleven million, two hundred seventeen thousand, seven hundred thirty-nine".