99786249 has 36 divisors (see below), whose sum is σ = 152574864. Its totient is φ = 65242584.

The previous prime is 99786221. The next prime is 99786257. The reversal of 99786249 is 94268799.

99786249 is a `hidden beast` number, since 9 + 9 + 7 + 8 + 624 + 9 = 666.

It is not a de Polignac number, because 99786249 - 2²⁰ = 98737673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99786195 and 99786204.

It is not an unprimeable number, because it can be changed into a prime (99786289) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 439474 + ... + 439700.

Almost surely, 2^99786249 is an apocalyptic number.

It is an amenable number.

99786249 is a deficient number, since it is larger than the sum of its proper divisors (52788615).

99786249 is an frugal number, since it uses more digits than its factorization.

99786249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 297 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 99786249 is about 9989.3067327017. The cubic root of 99786249 is about 463.8279326941.

The spelling of 99786249 in words is "ninety-nine million, seven hundred eighty-six thousand, two hundred forty-nine".