11139423 has 16 divisors (see below), whose sum is σ = 15283200. Its totient is φ = 7213536.

The previous prime is 11139419. The next prime is 11139431. The reversal of 11139423 is 32493111.

It is not a de Polignac number, because 11139423 - 2² = 11139419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11139393 and 11139402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27861 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (955200).

Almost surely, 2^11139423 is an apocalyptic number.

11139423 is a deficient number, since it is larger than the sum of its proper divisors (4143777).

11139423 is a wasteful number, since it uses less digits than its factorization.

11139423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its digits is 648, while the sum is 24.

The square root of 11139423 is about 3337.5774148325. The cubic root of 11139423 is about 223.3336850567. Note that the first 3 decimals are identical.

The spelling of 11139423 in words is "eleven million, one hundred thirty-nine thousand, four hundred twenty-three".