11389895 has 32 divisors (see below), whose sum is σ = 15923520. Its totient is φ = 7741440.

The previous prime is 11389877. The next prime is 11389897. The reversal of 11389895 is 59898311.

11389895 = 6² + 7² + ... + 324².

It is a happy number.

It is not a de Polignac number, because 11389895 - 2⁶ = 11389831 is a prime.

It is a super-2 number, since 2×11389895² = 259459416222050, which contains 22 as substring.

It is a plaindrome in base 9.

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 (11389897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58919 + ... + 59111.

It is an arithmetic number, because the mean of its divisors is an integer number (497610).

Almost surely, 2^11389895 is an apocalyptic number.

11389895 is a deficient number, since it is larger than the sum of its proper divisors (4533625).

11389895 is a wasteful number, since it uses less digits than its factorization.

11389895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its digits is 77760, while the sum is 44.

The square root of 11389895 is about 3374.8918501191. The cubic root of 11389895 is about 224.9951933130.

The spelling of 11389895 in words is "eleven million, three hundred eighty-nine thousand, eight hundred ninety-five".