11899005 has 16 divisors (see below), whose sum is σ = 19085760. Its totient is φ = 6330368.

The previous prime is 11899001. The next prime is 11899007. The reversal of 11899005 is 50099811.

It is a cyclic number.

It is not a de Polignac number, because 11899005 - 2² = 11899001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11899001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7741 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (1192860).

Almost surely, 2^11899005 is an apocalyptic number.

11899005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11899005 is a deficient number, since it is larger than the sum of its proper divisors (7186755).

11899005 is a wasteful number, since it uses less digits than its factorization.

11899005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 11899005 is about 3449.4934410722. The cubic root of 11899005 is about 228.2987580920.

The spelling of 11899005 in words is "eleven million, eight hundred ninety-nine thousand, five".