99980597 has 2 divisors, whose sum is σ = 99980598. Its totient is φ = 99980596.

The previous prime is 99980539. The next prime is 99980653. The reversal of 99980597 is 79508999.

It is an a-pointer prime, because the next prime (99980653) can be obtained adding 99980597 to its sum of digits (56).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73034116 + 26946481 = 8546^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 99980597 - 2¹⁶ = 99915061 is a prime.

It is a super-2 number, since 2×99980597² = 19992239552952818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99986597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49990298 + 49990299.

It is an arithmetic number, because the mean of its divisors is an integer number (49990299).

Almost surely, 2^99980597 is an apocalyptic number.

It is an amenable number.

99980597 is a deficient number, since it is larger than the sum of its proper divisors (1).

99980597 is an equidigital number, since it uses as much as digits as its factorization.

99980597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99980597 is about 9999.0298029359. The cubic root of 99980597 is about 464.1288611701.

The spelling of 99980597 in words is "ninety-nine million, nine hundred eighty thousand, five hundred ninety-seven".