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99864986 = 2133840961
BaseRepresentation
bin1011111001111…
…01000110011010
320221220200000012
411330331012122
5201031134421
613524241522
72321560364
oct574750632
9227820005
1099864986
115140a051
12295402a2
13178c7210
14d397d34
158b7995b
hex5f3d19a

99864986 has 8 divisors (see below), whose sum is σ = 161320404. Its totient is φ = 46091520.

The previous prime is 99864983. The next prime is 99864997. The reversal of 99864986 is 68946899.

It can be written as a sum of positive squares in 2 ways, for example, as 71081761 + 28783225 = 8431^2 + 5365^2 .

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

It is not an unprimeable number, because it can be changed into a prime (99864983) 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, 1920455 + ... + 1920506.

Almost surely, 299864986 is an apocalyptic number.

99864986 is a deficient number, since it is larger than the sum of its proper divisors (61455418).

99864986 is a wasteful number, since it uses less digits than its factorization.

99864986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840976.

The product of its digits is 6718464, while the sum is 59.

The square root of 99864986 is about 9993.2470198630. The cubic root of 99864986 is about 463.9498961208.

The spelling of 99864986 in words is "ninety-nine million, eight hundred sixty-four thousand, nine hundred eighty-six".

Divisors: 1 2 13 26 3840961 7681922 49932493 99864986