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87939395 = 5100917431
BaseRepresentation
bin1010011110111…
…01100101000011
320010110210011122
411033131211003
5140003030040
612420502455
72115321035
oct517354503
9203423148
1087939395
1145704195
122554aa2b
13152b005b
14b971c55
157ac11b5
hex53dd943

87939395 has 8 divisors (see below), whose sum is σ = 105637920. Its totient is φ = 70277760.

The previous prime is 87939389. The next prime is 87939407. The reversal of 87939395 is 59393978.

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

It is a de Polignac number, because none of the positive numbers 2k-87939395 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671 + ... + 13760.

It is an arithmetic number, because the mean of its divisors is an integer number (13204740).

Almost surely, 287939395 is an apocalyptic number.

87939395 is a deficient number, since it is larger than the sum of its proper divisors (17698525).

87939395 is a wasteful number, since it uses less digits than its factorization.

87939395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18445.

The product of its digits is 1837080, while the sum is 53.

The square root of 87939395 is about 9377.6007059375. The cubic root of 87939395 is about 444.6938853359.

The spelling of 87939395 in words is "eighty-seven million, nine hundred thirty-nine thousand, three hundred ninety-five".

Divisors: 1 5 1009 5045 17431 87155 17587879 87939395