99949549 has 16 divisors (see below), whose sum is σ = 118333440. Its totient is φ = 82612080.

The previous prime is 99949547. The next prime is 99949601. The reversal of 99949549 is 94594999.

It is a cyclic number.

It is not a de Polignac number, because 99949549 - 2¹ = 99949547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99949493 and 99949502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99949547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77262 + ... + 78544.

It is an arithmetic number, because the mean of its divisors is an integer number (7395840).

Almost surely, 2^99949549 is an apocalyptic number.

It is an amenable number.

99949549 is a deficient number, since it is larger than the sum of its proper divisors (18383891).

99949549 is a wasteful number, since it uses less digits than its factorization.

99949549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 4723920, while the sum is 58.

The square root of 99949549 is about 9997.4771317568. The cubic root of 99949549 is about 464.0808126312.

The spelling of 99949549 in words is "ninety-nine million, nine hundred forty-nine thousand, five hundred forty-nine".