1291199 has 12 divisors (see below), whose sum is σ = 1618344. Its totient is φ = 1021104.

The previous prime is 1291193. The next prime is 1291211. The reversal of 1291199 is 9911921.

It is not a de Polignac number, because 1291199 - 2¹⁶ = 1225663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (134862).

2^1291199 is an apocalyptic number.

1291199 is a deficient number, since it is larger than the sum of its proper divisors (327145).

1291199 is a wasteful number, since it uses less digits than its factorization.

1291199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2047 counting only the distinct ones).

The product of its digits is 1458, while the sum is 32.

The square root of 1291199 is about 1136.3093768864. The cubic root of 1291199 is about 108.8924394156.

The spelling of 1291199 in words is "one million, two hundred ninety-one thousand, one hundred ninety-nine".