99478927 has 4 divisors (see below), whose sum is σ = 104714680. Its totient is φ = 94243176.

The previous prime is 99478921. The next prime is 99478937. The reversal of 99478927 is 72987499.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99478927 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 (99478921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617848 + ... + 2617885.

It is an arithmetic number, because the mean of its divisors is an integer number (26178670).

Almost surely, 2^99478927 is an apocalyptic number.

99478927 is a deficient number, since it is larger than the sum of its proper divisors (5235753).

99478927 is a wasteful number, since it uses less digits than its factorization.

99478927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235752.

The product of its digits is 2286144, while the sum is 55.

The square root of 99478927 is about 9973.9123216519. The cubic root of 99478927 is about 463.3512767867.

The spelling of 99478927 in words is "ninety-nine million, four hundred seventy-eight thousand, nine hundred twenty-seven".