11398239 has 20 divisors (see below), whose sum is σ = 17196520. Its totient is φ = 7523280.

The previous prime is 11398237. The next prime is 11398243. The reversal of 11398239 is 93289311.

It is not a de Polignac number, because 11398239 - 2¹ = 11398237 is a prime.

It is a super-2 number, since 2×11398239² = 259839704602242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11398237) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8184 + ... + 9474.

It is an arithmetic number, because the mean of its divisors is an integer number (859826).

Almost surely, 2^11398239 is an apocalyptic number.

11398239 is a deficient number, since it is larger than the sum of its proper divisors (5798281).

11398239 is a wasteful number, since it uses less digits than its factorization.

11398239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1403 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 11398239 is about 3376.1278115616. The cubic root of 11398239 is about 225.0501221670.

The spelling of 11398239 in words is "eleven million, three hundred ninety-eight thousand, two hundred thirty-nine".