99571478 has 8 divisors (see below), whose sum is σ = 149541168. Its totient is φ = 49724424.

The previous prime is 99571469. The next prime is 99571519. The reversal of 99571478 is 87417599.

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

It is a super-2 number, since 2×99571478² = 19828958462208968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28601 + ... + 31892.

It is an arithmetic number, because the mean of its divisors is an integer number (18692646).

Almost surely, 2^99571478 is an apocalyptic number.

99571478 is a deficient number, since it is larger than the sum of its proper divisors (49969690).

99571478 is a wasteful number, since it uses less digits than its factorization.

99571478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61318.

The product of its digits is 635040, while the sum is 50.

The square root of 99571478 is about 9978.5508967986. The cubic root of 99571478 is about 463.4949264123.

The spelling of 99571478 in words is "ninety-nine million, five hundred seventy-one thousand, four hundred seventy-eight".