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80993001 = 326997667
BaseRepresentation
bin1001101001111…
…01101011101001
312122101212111210
410310331223221
5131213234001
612011543333
72002300125
oct464755351
9178355453
1080993001
114179a271
122315ab49
1313a1a36b
14aa84585
15719cdd6
hex4d3dae9

80993001 has 4 divisors (see below), whose sum is σ = 107990672. Its totient is φ = 53995332.

The previous prime is 80992997. The next prime is 80993009. The reversal of 80993001 is 10039908.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80993001 - 22 = 80992997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80993001.

It is not an unprimeable number, because it can be changed into a prime (80993009) 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, 13498831 + ... + 13498836.

It is an arithmetic number, because the mean of its divisors is an integer number (26997668).

Almost surely, 280993001 is an apocalyptic number.

It is an amenable number.

80993001 is a deficient number, since it is larger than the sum of its proper divisors (26997671).

80993001 is a wasteful number, since it uses less digits than its factorization.

80993001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26997670.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 80993001 is about 8999.6111582668. The cubic root of 80993001 is about 432.6624086286.

The spelling of 80993001 in words is "eighty million, nine hundred ninety-three thousand, one".

Divisors: 1 3 26997667 80993001