99450881 has 4 divisors (see below), whose sum is σ = 99606192. Its totient is φ = 99295572.

The previous prime is 99450859. The next prime is 99450887. The reversal of 99450881 is 18805499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99450881 - 2¹⁸ = 99188737 is a prime.

It is a super-2 number, since 2×99450881² = 19780955463352322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99450887) 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, 76691 + ... + 77976.

It is an arithmetic number, because the mean of its divisors is an integer number (24901548).

It is a Proth number, since it is equal to 3035 ⋅ 2¹⁵ + 1 and 3035 < 2¹⁵.

Almost surely, 2^99450881 is an apocalyptic number.

It is an amenable number.

99450881 is a deficient number, since it is larger than the sum of its proper divisors (155311).

99450881 is a wasteful number, since it uses less digits than its factorization.

99450881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155310.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 99450881 is about 9972.5062546985. The cubic root of 99450881 is about 463.3077286312.

The spelling of 99450881 in words is "ninety-nine million, four hundred fifty thousand, eight hundred eighty-one".