99803549 has 12 divisors (see below), whose sum is σ = 106618644. Its totient is φ = 93402624.

The previous prime is 99803533. The next prime is 99803563. The reversal of 99803549 is 94530899.

It can be written as a sum of positive squares in 6 ways, for example, as 9211225 + 90592324 = 3035^2 + 9518^2 .

It is not a de Polignac number, because 99803549 - 2⁴ = 99803533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99803579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56057 + ... + 57809.

It is an arithmetic number, because the mean of its divisors is an integer number (8884887).

Almost surely, 2^99803549 is an apocalyptic number.

It is an amenable number.

99803549 is a deficient number, since it is larger than the sum of its proper divisors (6815095).

99803549 is a wasteful number, since it uses less digits than its factorization.

99803549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 99803549 is about 9990.1726211312. The cubic root of 99803549 is about 463.8547358513.

The spelling of 99803549 in words is "ninety-nine million, eight hundred three thousand, five hundred forty-nine".