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803090639 = 13157393479
BaseRepresentation
bin101111110111100…
…011000011001111
32001222011020020202
4233313203003033
53121042400024
6211405004115
725621105061
oct5767430317
92058136222
10803090639
1138236197a
121a4b5363b
13ca4c5880
1478931731
154a787bae
hex2fde30cf

803090639 has 8 divisors (see below), whose sum is σ = 870377760. Its totient is φ = 736590816.

The previous prime is 803090627. The next prime is 803090641. The reversal of 803090639 is 936090308.

It is a happy number.

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

It is not a de Polignac number, because 803090639 - 28 = 803090383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803090669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194699 + ... + 198780.

It is an arithmetic number, because the mean of its divisors is an integer number (108797220).

Almost surely, 2803090639 is an apocalyptic number.

803090639 is a deficient number, since it is larger than the sum of its proper divisors (67287121).

803090639 is a wasteful number, since it uses less digits than its factorization.

803090639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393649.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 803090639 is about 28338.8538759068. The cubic root of 803090639 is about 929.5116868392.

The spelling of 803090639 in words is "eight hundred three million, ninety thousand, six hundred thirty-nine".

Divisors: 1 13 157 2041 393479 5115227 61776203 803090639