11499881 has 2 divisors, whose sum is σ = 11499882. Its totient is φ = 11499880.

The previous prime is 11499841. The next prime is 11499889. The reversal of 11499881 is 18899411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 477481 = 3320^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 11499881 - 2¹⁴ = 11483497 is a prime.

It is a super-2 number, since 2×11499881² = 264494526028322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11499889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5749940 + 5749941.

It is an arithmetic number, because the mean of its divisors is an integer number (5749941).

Almost surely, 2^11499881 is an apocalyptic number.

It is an amenable number.

11499881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11499881 is an equidigital number, since it uses as much as digits as its factorization.

11499881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 41.

The square root of 11499881 is about 3391.1474459245. The cubic root of 11499881 is about 225.7170932079.

The spelling of 11499881 in words is "eleven million, four hundred ninety-nine thousand, eight hundred eighty-one".