99390547 has 8 divisors (see below), whose sum is σ = 103602896. Its totient is φ = 95258592.

The previous prime is 99390527. The next prime is 99390553. The reversal of 99390547 is 74509399.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99390547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99390497 and 99390506.

It is not an unprimeable number, because it can be changed into a prime (99390527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17568 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (12950362).

Almost surely, 2^99390547 is an apocalyptic number.

99390547 is a deficient number, since it is larger than the sum of its proper divisors (4212349).

99390547 is a wasteful number, since it uses less digits than its factorization.

99390547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40197.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 99390547 is about 9969.4807788570. The cubic root of 99390547 is about 463.2140178368.

The spelling of 99390547 in words is "ninety-nine million, three hundred ninety thousand, five hundred forty-seven".