47738947 has 2 divisors, whose sum is σ = 47738948. Its totient is φ = 47738946.

The previous prime is 47738939. The next prime is 47738969. The reversal of 47738947 is 74983774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47738947 - 2³ = 47738939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47738947.

It is not a weakly prime, because it can be changed into another prime (47738347) 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, 23869473 + 23869474.

It is an arithmetic number, because the mean of its divisors is an integer number (23869474).

Almost surely, 2^47738947 is an apocalyptic number.

47738947 is a deficient number, since it is larger than the sum of its proper divisors (1).

47738947 is an equidigital number, since it uses as much as digits as its factorization.

47738947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 49.

The square root of 47738947 is about 6909.3376672442. The cubic root of 47738947 is about 362.7640805794.

The spelling of 47738947 in words is "forty-seven million, seven hundred thirty-eight thousand, nine hundred forty-seven".