99747147 has 8 divisors (see below), whose sum is σ = 133171344. Its totient is φ = 66410528.

The previous prime is 99747107. The next prime is 99747187. The reversal of 99747147 is 74174799.

It is an interprime number because it is at equal distance from previous prime (99747107) and next prime (99747187).

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

It is a cyclic number.

It is not a de Polignac number, because 99747147 - 2¹² = 99743051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99747096 and 99747105.

It is not an unprimeable number, because it can be changed into a prime (99747107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19188 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (16646418).

Almost surely, 2^99747147 is an apocalyptic number.

99747147 is a deficient number, since it is larger than the sum of its proper divisors (33424197).

99747147 is a wasteful number, since it uses less digits than its factorization.

99747147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43789.

The product of its digits is 444528, while the sum is 48.

The square root of 99747147 is about 9987.3493480503. The cubic root of 99747147 is about 463.7673399454.

The spelling of 99747147 in words is "ninety-nine million, seven hundred forty-seven thousand, one hundred forty-seven".