47670509 has 2 divisors, whose sum is σ = 47670510. Its totient is φ = 47670508.

The previous prime is 47670473. The next prime is 47670517. The reversal of 47670509 is 90507674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45941284 + 1729225 = 6778^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 47670509 - 2⁸ = 47670253 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47670589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23835254 + 23835255.

It is an arithmetic number, because the mean of its divisors is an integer number (23835255).

Almost surely, 2^47670509 is an apocalyptic number.

It is an amenable number.

47670509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47670509 is an equidigital number, since it uses as much as digits as its factorization.

47670509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 47670509 is about 6904.3833178641. The cubic root of 47670509 is about 362.5906462175.

The spelling of 47670509 in words is "forty-seven million, six hundred seventy thousand, five hundred nine".