1209964 has 24 divisors (see below), whose sum is σ = 2455040. Its totient is φ = 511056.

The previous prime is 1209959. The next prime is 1209973. The reversal of 1209964 is 4699021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939 + ... + 2485.

2^1209964 is an apocalyptic number.

1209964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1209964 is an abundant number, since it is smaller than the sum of its proper divisors (1245076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1209964 is a wasteful number, since it uses less digits than its factorization.

1209964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1209964 is about 1099.9836362419. The cubic root of 1209964 is about 106.5591668706.

The spelling of 1209964 in words is "one million, two hundred nine thousand, nine hundred sixty-four".