1209704994 has 24 divisors (see below), whose sum is σ = 2634757632. Its totient is φ = 401122680.

The previous prime is 1209704983. The next prime is 1209705037. The reversal of 1209704994 is 4994079021.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172494 + ... + 179369.

It is an arithmetic number, because the mean of its divisors is an integer number (109781568).

Almost surely, 2^1209704994 is an apocalyptic number.

1209704994 is an abundant number, since it is smaller than the sum of its proper divisors (1425052638).

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

1209704994 is a wasteful number, since it uses less digits than its factorization.

1209704994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352062 (or 352059 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1209704994 is about 34780.8135902540. The cubic root of 1209704994 is about 1065.5156294375.

The spelling of 1209704994 in words is "one billion, two hundred nine million, seven hundred four thousand, nine hundred ninety-four".