99478459 has 8 divisors (see below), whose sum is σ = 103463360. Its totient is φ = 95561856.

The previous prime is 99478453. The next prime is 99478469. The reversal of 99478459 is 95487499.

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 99478459 - 2⁷ = 99478331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99478453) 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, 14094 + ... + 19939.

It is an arithmetic number, because the mean of its divisors is an integer number (12932920).

Almost surely, 2^99478459 is an apocalyptic number.

99478459 is a deficient number, since it is larger than the sum of its proper divisors (3984901).

99478459 is a wasteful number, since it uses less digits than its factorization.

99478459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34149.

The product of its digits is 3265920, while the sum is 55.

The square root of 99478459 is about 9973.8888604195. Note that the first 4 decimals coincide. The cubic root of 99478459 is about 463.3505501714.

The spelling of 99478459 in words is "ninety-nine million, four hundred seventy-eight thousand, four hundred fifty-nine".