99970147 has 2 divisors, whose sum is σ = 99970148. Its totient is φ = 99970146.

The previous prime is 99970139. The next prime is 99970151. The reversal of 99970147 is 74107999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99970147 - 2³ = 99970139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99970097 and 99970106.

It is not a weakly prime, because it can be changed into another prime (99970127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49985073 + 49985074.

It is an arithmetic number, because the mean of its divisors is an integer number (49985074).

Almost surely, 2^99970147 is an apocalyptic number.

99970147 is a deficient number, since it is larger than the sum of its proper divisors (1).

99970147 is an equidigital number, since it uses as much as digits as its factorization.

99970147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 99970147 is about 9998.5072385832. The cubic root of 99970147 is about 464.1126903138.

The spelling of 99970147 in words is "ninety-nine million, nine hundred seventy thousand, one hundred forty-seven".