99459815 has 32 divisors (see below), whose sum is σ = 148807680. Its totient is φ = 62135424.

The previous prime is 99459803. The next prime is 99459827. The reversal of 99459815 is 51895499.

It is an interprime number because it is at equal distance from previous prime (99459803) and next prime (99459827).

It is not a de Polignac number, because 99459815 - 2¹⁰ = 99458791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34562 + ... + 37328.

It is an arithmetic number, because the mean of its divisors is an integer number (4650240).

Almost surely, 2^99459815 is an apocalyptic number.

99459815 is a deficient number, since it is larger than the sum of its proper divisors (49347865).

99459815 is a wasteful number, since it uses less digits than its factorization.

99459815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its digits is 583200, while the sum is 50.

The square root of 99459815 is about 9972.9541761707. The cubic root of 99459815 is about 463.3216017019.

The spelling of 99459815 in words is "ninety-nine million, four hundred fifty-nine thousand, eight hundred fifteen".