47229857 has 2 divisors, whose sum is σ = 47229858. Its totient is φ = 47229856.

The previous prime is 47229829. The next prime is 47229863. The reversal of 47229857 is 75892274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 2927521 = 6656^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 47229857 - 2¹⁴ = 47213473 is a prime.

It is a super-3 number, since 3×47229857³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47229817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23614928 + 23614929.

It is an arithmetic number, because the mean of its divisors is an integer number (23614929).

Almost surely, 2^47229857 is an apocalyptic number.

It is an amenable number.

47229857 is a deficient number, since it is larger than the sum of its proper divisors (1).

47229857 is an equidigital number, since it uses as much as digits as its factorization.

47229857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 47229857 is about 6872.3981985912. The cubic root of 47229857 is about 361.4699593131.

The spelling of 47229857 in words is "forty-seven million, two hundred twenty-nine thousand, eight hundred fifty-seven".