99937847 has 2 divisors, whose sum is σ = 99937848. Its totient is φ = 99937846.

The previous prime is 99937843. The next prime is 99937861. The reversal of 99937847 is 74873999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99937847 - 2² = 99937843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99937792 and 99937801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99937841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49968923 + 49968924.

It is an arithmetic number, because the mean of its divisors is an integer number (49968924).

Almost surely, 2^99937847 is an apocalyptic number.

99937847 is a deficient number, since it is larger than the sum of its proper divisors (1).

99937847 is an equidigital number, since it uses as much as digits as its factorization.

99937847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 99937847 is about 9996.8918669755. The cubic root of 99937847 is about 464.0627005414.

The spelling of 99937847 in words is "ninety-nine million, nine hundred thirty-seven thousand, eight hundred forty-seven".