11899637 has 2 divisors, whose sum is σ = 11899638. Its totient is φ = 11899636.

The previous prime is 11899621. The next prime is 11899661. The reversal of 11899637 is 73699811.

11899637 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 703921 = 3346^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 11899637 - 2⁴ = 11899621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11899687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5949818 + 5949819.

It is an arithmetic number, because the mean of its divisors is an integer number (5949819).

Almost surely, 2^11899637 is an apocalyptic number.

It is an amenable number.

11899637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11899637 is an equidigital number, since it uses as much as digits as its factorization.

11899637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 11899637 is about 3449.5850475093. The cubic root of 11899637 is about 228.3027999498.

The spelling of 11899637 in words is "eleven million, eight hundred ninety-nine thousand, six hundred thirty-seven".