11390239 has 4 divisors (see below), whose sum is σ = 13017424. Its totient is φ = 9763056.

The previous prime is 11390213. The next prime is 11390261. The reversal of 11390239 is 93209311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93209311 = 13 ⋅7169947.

It is a cyclic number.

It is not a de Polignac number, because 11390239 - 2¹³ = 11382047 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11390039) 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, 813582 + ... + 813595.

It is an arithmetic number, because the mean of its divisors is an integer number (3254356).

Almost surely, 2^11390239 is an apocalyptic number.

11390239 is a deficient number, since it is larger than the sum of its proper divisors (1627185).

11390239 is an equidigital number, since it uses as much as digits as its factorization.

11390239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627184.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 11390239 is about 3374.9428143303. The cubic root of 11390239 is about 224.9974584075.

The spelling of 11390239 in words is "eleven million, three hundred ninety thousand, two hundred thirty-nine".