99913649 has 8 divisors (see below), whose sum is σ = 109304640. Its totient is φ = 90574000.

The previous prime is 99913643. The next prime is 99913661. The reversal of 99913649 is 94631999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99913649 - 2⁸ = 99913393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99913597 and 99913606.

It is not an unprimeable number, because it can be changed into a prime (99913643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8702 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (13663080).

Almost surely, 2^99913649 is an apocalyptic number.

It is an amenable number.

99913649 is a deficient number, since it is larger than the sum of its proper divisors (9390991).

99913649 is a wasteful number, since it uses less digits than its factorization.

99913649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25671.

The product of its digits is 472392, while the sum is 50.

The square root of 99913649 is about 9995.6815175355. The cubic root of 99913649 is about 464.0252429415.

The spelling of 99913649 in words is "ninety-nine million, nine hundred thirteen thousand, six hundred forty-nine".