11389729 has 8 divisors (see below), whose sum is σ = 12315240. Its totient is φ = 10471296.

The previous prime is 11389723. The next prime is 11389771. The reversal of 11389729 is 92798311.

11389729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 11189025 = 448^2 + 3345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11389729 - 2¹³ = 11381537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11389691 and 11389700.

It is not an unprimeable number, because it can be changed into a prime (11389723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869 + ... + 5125.

It is an arithmetic number, because the mean of its divisors is an integer number (1539405).

Almost surely, 2^11389729 is an apocalyptic number.

It is an amenable number.

11389729 is a deficient number, since it is larger than the sum of its proper divisors (925511).

11389729 is a wasteful number, since it uses less digits than its factorization.

11389729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539.

The product of its digits is 27216, while the sum is 40.

The square root of 11389729 is about 3374.8672566488. The cubic root of 11389729 is about 224.9941002568.

The spelling of 11389729 in words is "eleven million, three hundred eighty-nine thousand, seven hundred twenty-nine".