47645393 has 2 divisors, whose sum is σ = 47645394. Its totient is φ = 47645392.

The previous prime is 47645387. The next prime is 47645413. The reversal of 47645393 is 39354674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44849809 + 2795584 = 6697^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 47645393 - 2¹⁰ = 47644369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47645393.

It is not a weakly prime, because it can be changed into another prime (47645303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23822696 + 23822697.

It is an arithmetic number, because the mean of its divisors is an integer number (23822697).

Almost surely, 2^47645393 is an apocalyptic number.

It is an amenable number.

47645393 is a deficient number, since it is larger than the sum of its proper divisors (1).

47645393 is an equidigital number, since it uses as much as digits as its factorization.

47645393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 47645393 is about 6902.5642336743. The cubic root of 47645393 is about 362.5269560613.

The spelling of 47645393 in words is "forty-seven million, six hundred forty-five thousand, three hundred ninety-three".