99849649 has 4 divisors (see below), whose sum is σ = 99944820. Its totient is φ = 99754480.

The previous prime is 99849623. The next prime is 99849661. The reversal of 99849649 is 94694899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94694899 = 13 ⋅7284223.

It can be written as a sum of positive squares in 2 ways, for example, as 26010000 + 73839649 = 5100^2 + 8593^2 .

It is a cyclic number.

It is not a de Polignac number, because 99849649 - 2⁷ = 99849521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99849593 and 99849602.

It is not an unprimeable number, because it can be changed into a prime (99849689) 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, 45994 + ... + 48115.

It is an arithmetic number, because the mean of its divisors is an integer number (24986205).

Almost surely, 2^99849649 is an apocalyptic number.

It is an amenable number.

99849649 is a deficient number, since it is larger than the sum of its proper divisors (95171).

99849649 is a wasteful number, since it uses less digits than its factorization.

99849649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95170.

The product of its digits is 5038848, while the sum is 58.

The square root of 99849649 is about 9992.4796221959. The cubic root of 99849649 is about 463.9261441728.

The spelling of 99849649 in words is "ninety-nine million, eight hundred forty-nine thousand, six hundred forty-nine".