47945999 has 2 divisors, whose sum is σ = 47946000. Its totient is φ = 47945998.

The previous prime is 47945993. The next prime is 47946011. The reversal of 47945999 is 99954974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47945999 - 2⁴ = 47945983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47945993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23972999 + 23973000.

It is an arithmetic number, because the mean of its divisors is an integer number (23973000).

Almost surely, 2^47945999 is an apocalyptic number.

47945999 is a deficient number, since it is larger than the sum of its proper divisors (1).

47945999 is an equidigital number, since it uses as much as digits as its factorization.

47945999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 47945999 is about 6924.3049470687. The cubic root of 47945999 is about 363.2877808578.

The spelling of 47945999 in words is "forty-seven million, nine hundred forty-five thousand, nine hundred ninety-nine".