99618449 has 4 divisors (see below), whose sum is σ = 113849664. Its totient is φ = 85387236.

The previous prime is 99618437. The next prime is 99618457. The reversal of 99618449 is 94481699.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 99618449 - 2⁴ = 99618433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99618397 and 99618406.

It is not an unprimeable number, because it can be changed into a prime (99618049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7115597 + ... + 7115610.

It is an arithmetic number, because the mean of its divisors is an integer number (28462416).

Almost surely, 2^99618449 is an apocalyptic number.

It is an amenable number.

99618449 is a deficient number, since it is larger than the sum of its proper divisors (14231215).

99618449 is a wasteful number, since it uses less digits than its factorization.

99618449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14231214.

The product of its digits is 559872, while the sum is 50.

The square root of 99618449 is about 9980.9042175546. The cubic root of 99618449 is about 463.5677966699.

The spelling of 99618449 in words is "ninety-nine million, six hundred eighteen thousand, four hundred forty-nine".