1212939 has 24 divisors (see below), whose sum is σ = 2157792. Its totient is φ = 639360.

The previous prime is 1212931. The next prime is 1212943. The reversal of 1212939 is 9392121.

It is not a de Polignac number, because 1212939 - 2³ = 1212931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (89908).

2^1212939 is an apocalyptic number.

1212939 is a deficient number, since it is larger than the sum of its proper divisors (944853).

1212939 is a wasteful number, since it uses less digits than its factorization.

1212939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1504 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1212939 is about 1101.3350988686. The cubic root of 1212939 is about 106.6464295375.

The spelling of 1212939 in words is "one million, two hundred twelve thousand, nine hundred thirty-nine".