1213704009 has 12 divisors (see below), whose sum is σ = 2003574976. Its totient is φ = 693545112.

The previous prime is 1213703999. The next prime is 1213704013. The reversal of 1213704009 is 9004073121.

It is not a de Polignac number, because 1213704009 - 2⁴ = 1213703993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213704029) 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, 9632509 + ... + 9632634.

Almost surely, 2^1213704009 is an apocalyptic number.

It is an amenable number.

1213704009 is a deficient number, since it is larger than the sum of its proper divisors (789870967).

1213704009 is a wasteful number, since it uses less digits than its factorization.

1213704009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19265156 (or 19265153 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1213704009 is about 34838.2549649089. The cubic root of 1213704009 is about 1066.6884570527.

The spelling of 1213704009 in words is "one billion, two hundred thirteen million, seven hundred four thousand, nine".