99855406 has 8 divisors (see below), whose sum is σ = 171180720. Its totient is φ = 42795168.

The previous prime is 99855403. The next prime is 99855407. The reversal of 99855406 is 60455899.

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

It is a super-2 number, since 2×99855406² = 19942204214849672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99855403) 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, 3566251 + ... + 3566278.

It is an arithmetic number, because the mean of its divisors is an integer number (21397590).

Almost surely, 2^99855406 is an apocalyptic number.

99855406 is a deficient number, since it is larger than the sum of its proper divisors (71325314).

99855406 is a wasteful number, since it uses less digits than its factorization.

99855406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132538.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 99855406 is about 9992.7676846808. The cubic root of 99855406 is about 463.9350601497.

The spelling of 99855406 in words is "ninety-nine million, eight hundred fifty-five thousand, four hundred six".