47375309 has 2 divisors, whose sum is σ = 47375310. Its totient is φ = 47375308.

The previous prime is 47375267. The next prime is 47375329. The reversal of 47375309 is 90357374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 521284 = 6845^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 47375309 - 2¹² = 47371213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47375329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23687654 + 23687655.

It is an arithmetic number, because the mean of its divisors is an integer number (23687655).

Almost surely, 2^47375309 is an apocalyptic number.

It is an amenable number.

47375309 is a deficient number, since it is larger than the sum of its proper divisors (1).

47375309 is an equidigital number, since it uses as much as digits as its factorization.

47375309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 47375309 is about 6882.9723957023. The cubic root of 47375309 is about 361.8406474848.

The spelling of 47375309 in words is "forty-seven million, three hundred seventy-five thousand, three hundred nine".