99153409 has 4 divisors (see below), whose sum is σ = 101263104. Its totient is φ = 97043716.

The previous prime is 99153361. The next prime is 99153433. The reversal of 99153409 is 90435199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90435199 = 2237 ⋅40427.

It is a cyclic number.

It is not a de Polignac number, because 99153409 - 2⁷ = 99153281 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99154409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054777 + ... + 1054870.

It is an arithmetic number, because the mean of its divisors is an integer number (25315776).

Almost surely, 2^99153409 is an apocalyptic number.

It is an amenable number.

99153409 is a deficient number, since it is larger than the sum of its proper divisors (2109695).

99153409 is a wasteful number, since it uses less digits than its factorization.

99153409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109694.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 99153409 is about 9957.5804792128. The cubic root of 99153409 is about 462.8453270975.

The spelling of 99153409 in words is "ninety-nine million, one hundred fifty-three thousand, four hundred nine".