11899013 has 16 divisors (see below), whose sum is σ = 14044800. Its totient is φ = 10075968.

The previous prime is 11899007. The next prime is 11899049. The reversal of 11899013 is 31099811.

It is not a de Polignac number, because 11899013 - 2¹⁸ = 11636869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11899213) 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, 38606 + ... + 38912.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^11899013 is an apocalyptic number.

It is an amenable number.

11899013 is a deficient number, since it is larger than the sum of its proper divisors (2145787).

11899013 is an equidigital number, since it uses as much as digits as its factorization.

11899013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11899013 is about 3449.4946006625. The cubic root of 11899013 is about 228.2988092556.

The spelling of 11899013 in words is "eleven million, eight hundred ninety-nine thousand, thirteen".