47404790809 has 2 divisors, whose sum is σ = 47404790810. Its totient is φ = 47404790808.

The previous prime is 47404790773. The next prime is 47404790813. The reversal of 47404790809 is 90809740474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33866304784 + 13538486025 = 184028^2 + 116355^2 .

It is a cyclic number.

It is not a de Polignac number, because 47404790809 - 2¹⁷ = 47404659737 is a prime.

It is not a weakly prime, because it can be changed into another prime (47404793809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23702395404 + 23702395405.

It is an arithmetic number, because the mean of its divisors is an integer number (23702395405).

Almost surely, 2^47404790809 is an apocalyptic number.

It is an amenable number.

47404790809 is a deficient number, since it is larger than the sum of its proper divisors (1).

47404790809 is an equidigital number, since it uses as much as digits as its factorization.

47404790809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 47404790809 in words is "forty-seven billion, four hundred four million, seven hundred ninety thousand, eight hundred nine".