99524447 has 4 divisors (see below), whose sum is σ = 108572136.
Its totient is φ = 90476760.
The previous prime is 99524429. The next prime is 99524459. The reversal of 99524447 is 74442599.
It is a semiprime because it is the product of two primes.
It is a de Polignac number, because none of the positive numbers 2k-99524447 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 99524398 and 99524407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (99524497) 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, 4523828 + ... + 4523849.
It is an arithmetic number, because the mean of its divisors is an integer number (27143034).
Almost surely, 299524447 is an apocalyptic number.
99524447 is the 5333-rd centered heptagonal number.
99524447 is a deficient number, since it is larger than the sum of its proper divisors (9047689).
99524447 is a wasteful number, since it uses less digits than its factorization.
99524447 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9047688.
The product of its digits is 362880, while the sum is 44.
The square root of 99524447 is about 9976.1940137509.
The cubic root of 99524447 is about 463.4219401070.
The spelling of 99524447 in words is "ninety-nine million, five hundred twenty-four thousand, four hundred forty-seven".