1209949 has 8 divisors (see below), whose sum is σ = 1313312. Its totient is φ = 1108080.

The previous prime is 1209947. The next prime is 1209959. The reversal of 1209949 is 9499021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1209949 - 2¹ = 1209947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (164164).

2^1209949 is an apocalyptic number.

It is an amenable number.

1209949 is a deficient number, since it is larger than the sum of its proper divisors (103363).

1209949 is a wasteful number, since it uses less digits than its factorization.

1209949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1209949 is about 1099.9768179375. The cubic root of 1209949 is about 106.5587265285.

The spelling of 1209949 in words is "one million, two hundred nine thousand, nine hundred forty-nine".