99555499 has 2 divisors, whose sum is σ = 99555500. Its totient is φ = 99555498.

The previous prime is 99555487. The next prime is 99555559. The reversal of 99555499 is 99455599.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99555499 is a prime.

It is a super-2 number, since 2×99555499² = 19822594762278002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99555409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49777749 + 49777750.

It is an arithmetic number, because the mean of its divisors is an integer number (49777750).

Almost surely, 2^99555499 is an apocalyptic number.

99555499 is a deficient number, since it is larger than the sum of its proper divisors (1).

99555499 is an equidigital number, since it uses as much as digits as its factorization.

99555499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3280500, while the sum is 55.

The square root of 99555499 is about 9977.7501973140. The cubic root of 99555499 is about 463.4701315554.

The spelling of 99555499 in words is "ninety-nine million, five hundred fifty-five thousand, four hundred ninety-nine".