47312999 has 2 divisors, whose sum is σ = 47313000. Its totient is φ = 47312998.

The previous prime is 47312977. The next prime is 47313017. The reversal of 47312999 is 99921374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47312999 - 2¹⁶ = 47247463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47312099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23656499 + 23656500.

It is an arithmetic number, because the mean of its divisors is an integer number (23656500).

Almost surely, 2^47312999 is an apocalyptic number.

47312999 is a deficient number, since it is larger than the sum of its proper divisors (1).

47312999 is an equidigital number, since it uses as much as digits as its factorization.

47312999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 47312999 is about 6878.4445189301. Note that the first 3 decimals coincide. The cubic root of 47312999 is about 361.6819418703.

The spelling of 47312999 in words is "forty-seven million, three hundred twelve thousand, nine hundred ninety-nine".