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99870044 = 2224967511
BaseRepresentation
bin1011111001111…
…10010101011100
320221220220221112
411330332111130
5201031320134
613524321152
72321611211
oct574762534
9227826845
1099870044
115141292a
12295431b8
13178c9601
14d399b08
158b7b1ce
hex5f3e55c

99870044 has 6 divisors (see below), whose sum is σ = 174772584. Its totient is φ = 49935020.

The previous prime is 99870031. The next prime is 99870047. The reversal of 99870044 is 44007899.

It is a junction number, because it is equal to n+sod(n) for n = 99869983 and 99870010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99870047) by changing a digit.

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 as a sum of consecutive naturals, namely, 12483752 + ... + 12483759.

It is an arithmetic number, because the mean of its divisors is an integer number (29128764).

Almost surely, 299870044 is an apocalyptic number.

It is an amenable number.

99870044 is a deficient number, since it is larger than the sum of its proper divisors (74902540).

99870044 is a wasteful number, since it uses less digits than its factorization.

99870044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24967515 (or 24967513 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 99870044 is about 9993.5000875569. The cubic root of 99870044 is about 463.9577287591.

The spelling of 99870044 in words is "ninety-nine million, eight hundred seventy thousand, forty-four".

Divisors: 1 2 4 24967511 49935022 99870044