47249947 has 2 divisors, whose sum is σ = 47249948. Its totient is φ = 47249946.

The previous prime is 47249927. The next prime is 47249959. The reversal of 47249947 is 74994274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47249947 - 2¹⁹ = 46725659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47249897 and 47249906.

It is not a weakly prime, because it can be changed into another prime (47249927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23624973 + 23624974.

It is an arithmetic number, because the mean of its divisors is an integer number (23624974).

Almost surely, 2^47249947 is an apocalyptic number.

47249947 is a deficient number, since it is larger than the sum of its proper divisors (1).

47249947 is an equidigital number, since it uses as much as digits as its factorization.

47249947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 47249947 is about 6873.8596872500. The cubic root of 47249947 is about 361.5212044542.

The spelling of 47249947 in words is "forty-seven million, two hundred forty-nine thousand, nine hundred forty-seven".