99405458 has 8 divisors (see below), whose sum is σ = 153138252. Its totient is φ = 48359376.

The previous prime is 99405451. The next prime is 99405479. The reversal of 99405458 is 85450499.

It can be written as a sum of positive squares in 2 ways, for example, as 66308449 + 33097009 = 8143^2 + 5753^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99405451) 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, 671585 + ... + 671732.

Almost surely, 2^99405458 is an apocalyptic number.

99405458 is a deficient number, since it is larger than the sum of its proper divisors (53732794).

99405458 is a wasteful number, since it uses less digits than its factorization.

99405458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343356.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 99405458 is about 9970.2285831369. The cubic root of 99405458 is about 463.2371811357.

The spelling of 99405458 in words is "ninety-nine million, four hundred five thousand, four hundred fifty-eight".