1209468747 has 4 divisors (see below), whose sum is σ = 1612625000. Its totient is φ = 806312496.

The previous prime is 1209468739. The next prime is 1209468763. The reversal of 1209468747 is 7478649021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1209468747 - 2³ = 1209468739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1209468696 and 1209468705.

It is not an unprimeable number, because it can be changed into a prime (1209468707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201578122 + ... + 201578127.

It is an arithmetic number, because the mean of its divisors is an integer number (403156250).

Almost surely, 2^1209468747 is an apocalyptic number.

1209468747 is a deficient number, since it is larger than the sum of its proper divisors (403156253).

1209468747 is an equidigital number, since it uses as much as digits as its factorization.

1209468747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403156252.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 1209468747 is about 34777.4171985212. The cubic root of 1209468747 is about 1065.4462623162.

The spelling of 1209468747 in words is "one billion, two hundred nine million, four hundred sixty-eight thousand, seven hundred forty-seven".