1207794406009 has 9 divisors (see below), whose sum is σ = 1219306411141. Its totient is φ = 1196390114140.

The previous prime is 1207794405959. The next prime is 1207794406019. The reversal of 1207794406009 is 9006044977021.

The square root of 1207794406009 is 1098997.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1207794406009 - 2¹⁵ = 1207794373241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1207794406019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117587544 + ... + 117597814.

Almost surely, 2^{1207794406009} is an apocalyptic number.

1207794406009 is the 1098997-th square number.

1207794406009 is the 549499-th centered octagonal number.

It is an amenable number.

1207794406009 is a deficient number, since it is larger than the sum of its proper divisors (11512005132).

1207794406009 is an frugal number, since it uses more digits than its factorization.

1207794406009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20756 (or 10378 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

Multiplying 1207794406009 by its sum of digits (49), we get a square (59181925894441 = 7692979²).

The spelling of 1207794406009 in words is "one trillion, two hundred seven billion, seven hundred ninety-four million, four hundred six thousand, nine".