46778009 has 2 divisors, whose sum is σ = 46778010. Its totient is φ = 46778008.

The previous prime is 46778003. The next prime is 46778047. The reversal of 46778009 is 90087764.

46778009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40921609 + 5856400 = 6397^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 46778009 - 2¹² = 46773913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (46778003) 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 as a sum of consecutive naturals, namely, 23389004 + 23389005.

It is an arithmetic number, because the mean of its divisors is an integer number (23389005).

Almost surely, 2^46778009 is an apocalyptic number.

It is an amenable number.

46778009 is a deficient number, since it is larger than the sum of its proper divisors (1).

46778009 is an equidigital number, since it uses as much as digits as its factorization.

46778009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 46778009 is about 6839.4450798292. The cubic root of 46778009 is about 360.3135360081.

The spelling of 46778009 in words is "forty-six million, seven hundred seventy-eight thousand, nine".