99780059 has 2 divisors, whose sum is σ = 99780060. Its totient is φ = 99780058.

The previous prime is 99779989. The next prime is 99780067. The reversal of 99780059 is 95008799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99780059 - 2⁸ = 99779803 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99779995 and 99780022.

It is not a weakly prime, because it can be changed into another prime (99780559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49890029 + 49890030.

It is an arithmetic number, because the mean of its divisors is an integer number (49890030).

Almost surely, 2^99780059 is an apocalyptic number.

99780059 is a deficient number, since it is larger than the sum of its proper divisors (1).

99780059 is an equidigital number, since it uses as much as digits as its factorization.

99780059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 99780059 is about 9988.9968965858. The cubic root of 99780059 is about 463.8183416790.

The spelling of 99780059 in words is "ninety-nine million, seven hundred eighty thousand, fifty-nine".