11997049 has 2 divisors, whose sum is σ = 11997050. Its totient is φ = 11997048.

The previous prime is 11996993. The next prime is 11997059. The reversal of 11997049 is 94079911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7868025 + 4129024 = 2805^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 11997049 - 2¹⁹ = 11472761 is a prime.

It is equal to p₇₈₇₈₉₁ and since 11997049 and 787891 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11997059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998524 + 5998525.

It is an arithmetic number, because the mean of its divisors is an integer number (5998525).

Almost surely, 2^11997049 is an apocalyptic number.

It is an amenable number.

11997049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997049 is an equidigital number, since it uses as much as digits as its factorization.

11997049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 11997049 is about 3463.6756487870. The cubic root of 11997049 is about 228.9240800180.

The spelling of 11997049 in words is "eleven million, nine hundred ninety-seven thousand, forty-nine".