47906399 has 2 divisors, whose sum is σ = 47906400. Its totient is φ = 47906398.

The previous prime is 47906389. The next prime is 47906437. The reversal of 47906399 is 99360974.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47906399 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 (47906359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23953199 + 23953200.

It is an arithmetic number, because the mean of its divisors is an integer number (23953200).

Almost surely, 2^47906399 is an apocalyptic number.

47906399 is a deficient number, since it is larger than the sum of its proper divisors (1).

47906399 is an equidigital number, since it uses as much as digits as its factorization.

47906399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 47906399 is about 6921.4448636105. Note that the first 3 decimals coincide. The cubic root of 47906399 is about 363.1877366490.

The spelling of 47906399 in words is "forty-seven million, nine hundred six thousand, three hundred ninety-nine".