1234809047 has 2 divisors, whose sum is σ = 1234809048. Its totient is φ = 1234809046.

The previous prime is 1234808987. The next prime is 1234809109. The reversal of 1234809047 is 7409084321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1234809047 - 2⁶ = 1234808983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1234809047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234829047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617404523 + 617404524.

It is an arithmetic number, because the mean of its divisors is an integer number (617404524).

Almost surely, 2^1234809047 is an apocalyptic number.

1234809047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234809047 is an equidigital number, since it uses as much as digits as its factorization.

1234809047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1234809047 is about 35139.8498431624. The cubic root of 1234809047 is about 1072.8358254509.

The spelling of 1234809047 in words is "one billion, two hundred thirty-four million, eight hundred nine thousand, forty-seven".