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99442505 = 5615712
BaseRepresentation
bin1011110110101…
…01111101001001
320221010012110202
411323111331021
5200424130010
613511221545
72315150561
oct573257511
9227105422
1099442505
1151150698
12293778b5
13177a9b26
14d2c7da1
158ae46a5
hex5ed5f49

99442505 has 12 divisors (see below), whose sum is σ = 121500036. Its totient is φ = 78112800.

The previous prime is 99442481. The next prime is 99442517. The reversal of 99442505 is 50524499.

It can be written as a sum of positive squares in 2 ways, for example, as 15976009 + 83466496 = 3997^2 + 9136^2 .

It is not a de Polignac number, because 99442505 - 28 = 99442249 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 173870 + ... + 174440.

It is an arithmetic number, because the mean of its divisors is an integer number (10125003).

Almost surely, 299442505 is an apocalyptic number.

It is an amenable number.

99442505 is a deficient number, since it is larger than the sum of its proper divisors (22057531).

99442505 is an frugal number, since it uses more digits than its factorization.

99442505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 99442505 is about 9972.0862912432. The cubic root of 99442505 is about 463.2947212905.

The spelling of 99442505 in words is "ninety-nine million, four hundred forty-two thousand, five hundred five".

Divisors: 1 5 61 305 571 2855 34831 174155 326041 1630205 19888501 99442505