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80299399 = 5313711059
BaseRepresentation
bin1001100100101…
…00010110000111
312121002122001211
410302110112013
5131024040044
611545032251
71663351015
oct462242607
9177078054
1080299399
1141366144
1222a85687
131383674b
14a9438b5
1570b2634
hex4c94587

80299399 has 8 divisors (see below), whose sum is σ = 82419120. Its totient is φ = 78202176.

The previous prime is 80299391. The next prime is 80299409. The reversal of 80299399 is 99399208.

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 80299399 - 23 = 80299391 is a prime.

It is a super-2 number, since 2×802993992 = 12895986959522402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80299391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 12790.

It is an arithmetic number, because the mean of its divisors is an integer number (10302390).

Almost surely, 280299399 is an apocalyptic number.

80299399 is a deficient number, since it is larger than the sum of its proper divisors (2119721).

80299399 is a wasteful number, since it uses less digits than its factorization.

80299399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11249.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 80299399 is about 8960.9931927214. The cubic root of 80299399 is about 431.4237984909.

The spelling of 80299399 in words is "eighty million, two hundred ninety-nine thousand, three hundred ninety-nine".

Divisors: 1 53 137 7261 11059 586127 1515083 80299399