99980357 has 2 divisors, whose sum is σ = 99980358. Its totient is φ = 99980356.

The previous prime is 99980351. The next prime is 99980399. The reversal of 99980357 is 75308999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66814276 + 33166081 = 8174^2 + 5759^2 .

It is a cyclic number.

It is not a de Polignac number, because 99980357 - 2¹⁰ = 99979333 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 (99980351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49990178 + 49990179.

It is an arithmetic number, because the mean of its divisors is an integer number (49990179).

Almost surely, 2^99980357 is an apocalyptic number.

It is an amenable number.

99980357 is a deficient number, since it is larger than the sum of its proper divisors (1).

99980357 is an equidigital number, since it uses as much as digits as its factorization.

99980357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 99980357 is about 9999.0178017643. The cubic root of 99980357 is about 464.1284897946.

The spelling of 99980357 in words is "ninety-nine million, nine hundred eighty thousand, three hundred fifty-seven".