47444393 has 2 divisors, whose sum is σ = 47444394. Its totient is φ = 47444392.

The previous prime is 47444389. The next prime is 47444407. The reversal of 47444393 is 39344474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37908649 + 9535744 = 6157^2 + 3088^2 .

It is a cyclic number.

It is not a de Polignac number, because 47444393 - 2² = 47444389 is a prime.

It is a Chen prime.

It is equal to p_2856791 and since 47444393 and 2856791 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47444303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722196 + 23722197.

It is an arithmetic number, because the mean of its divisors is an integer number (23722197).

Almost surely, 2^47444393 is an apocalyptic number.

It is an amenable number.

47444393 is a deficient number, since it is larger than the sum of its proper divisors (1).

47444393 is an equidigital number, since it uses as much as digits as its factorization.

47444393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 38.

The square root of 47444393 is about 6887.9890388995. The cubic root of 47444393 is about 362.0164441112.

The spelling of 47444393 in words is "forty-seven million, four hundred forty-four thousand, three hundred ninety-three".