47945923 has 2 divisors, whose sum is σ = 47945924. Its totient is φ = 47945922.

The previous prime is 47945893. The next prime is 47945927. The reversal of 47945923 is 32954974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47945923 - 2⁹ = 47945411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47945923.

It is not a weakly prime, because it can be changed into another prime (47945927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23972961 + 23972962.

It is an arithmetic number, because the mean of its divisors is an integer number (23972962).

Almost surely, 2^47945923 is an apocalyptic number.

47945923 is a deficient number, since it is larger than the sum of its proper divisors (1).

47945923 is an equidigital number, since it uses as much as digits as its factorization.

47945923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 47945923 is about 6924.2994591511. The cubic root of 47945923 is about 363.2875889065.

The spelling of 47945923 in words is "forty-seven million, nine hundred forty-five thousand, nine hundred twenty-three".