11539723 has 4 divisors (see below), whose sum is σ = 12427408. Its totient is φ = 10652040.

The previous prime is 11539699. The next prime is 11539729. The reversal of 11539723 is 32793511.

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 11539723 - 2⁵ = 11539691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11539729) 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, 443823 + ... + 443848.

It is an arithmetic number, because the mean of its divisors is an integer number (3106852).

Almost surely, 2^11539723 is an apocalyptic number.

11539723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11539723 is a deficient number, since it is larger than the sum of its proper divisors (887685).

11539723 is an equidigital number, since it uses as much as digits as its factorization.

11539723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887684.

The product of its digits is 5670, while the sum is 31.

The square root of 11539723 is about 3397.0167794699. The cubic root of 11539723 is about 225.9774627068.

The spelling of 11539723 in words is "eleven million, five hundred thirty-nine thousand, seven hundred twenty-three".