47794309 has 2 divisors, whose sum is σ = 47794310. Its totient is φ = 47794308.

The previous prime is 47794277. The next prime is 47794319. The reversal of 47794309 is 90349774.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 8381025 = 6278^2 + 2895^2 .

It is a cyclic number.

It is not a de Polignac number, because 47794309 - 2⁵ = 47794277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47794319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23897154 + 23897155.

It is an arithmetic number, because the mean of its divisors is an integer number (23897155).

Almost surely, 2^47794309 is an apocalyptic number.

It is an amenable number.

47794309 is a deficient number, since it is larger than the sum of its proper divisors (1).

47794309 is an equidigital number, since it uses as much as digits as its factorization.

47794309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 47794309 is about 6913.3428238443. The cubic root of 47794309 is about 362.9042567378.

The spelling of 47794309 in words is "forty-seven million, seven hundred ninety-four thousand, three hundred nine".