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99385945 = 599719937
BaseRepresentation
bin1011110110010…
…00001001011001
320221000022212221
411323020021121
5200420322240
613510104041
72314523641
oct573101131
9227008787
1099385945
115111214a
122934b021
131778a169
14d2b1521
158ad2a4a
hex5ec8259

99385945 has 8 divisors (see below), whose sum is σ = 119388744. Its totient is φ = 79425024.

The previous prime is 99385933. The next prime is 99385981. The reversal of 99385945 is 54958399.

It can be written as a sum of positive squares in 4 ways, for example, as 11532816 + 87853129 = 3396^2 + 9373^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99385945 - 213 = 99377753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99385892 and 99385901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4984 + ... + 14953.

It is an arithmetic number, because the mean of its divisors is an integer number (14923593).

Almost surely, 299385945 is an apocalyptic number.

99385945 is the 4985-th decagonal number.

It is an amenable number.

99385945 is a deficient number, since it is larger than the sum of its proper divisors (20002799).

99385945 is a wasteful number, since it uses less digits than its factorization.

99385945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20939.

The product of its digits is 1749600, while the sum is 52.

The square root of 99385945 is about 9969.2499717882. The cubic root of 99385945 is about 463.2068684519.

The spelling of 99385945 in words is "ninety-nine million, three hundred eighty-five thousand, nine hundred forty-five".

Divisors: 1 5 997 4985 19937 99685 19877189 99385945