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80353939 = 271296509
BaseRepresentation
bin1001100101000…
…01101010010011
312121012101212211
410302201222103
5131032311224
611550132551
71663666021
oct462415223
9177171784
1080353939
11413a3116
1222ab1157
1313855513
14a959711
1570c3894
hex4ca1a93

80353939 has 4 divisors (see below), whose sum is σ = 80650720. Its totient is φ = 80057160.

The previous prime is 80353937. The next prime is 80353957. The reversal of 80353939 is 93935308.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80353939 - 21 = 80353937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80353937) 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, 147984 + ... + 148525.

It is an arithmetic number, because the mean of its divisors is an integer number (20162680).

Almost surely, 280353939 is an apocalyptic number.

80353939 is a deficient number, since it is larger than the sum of its proper divisors (296781).

80353939 is a wasteful number, since it uses less digits than its factorization.

80353939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296780.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 80353939 is about 8964.0358656132. The cubic root of 80353939 is about 431.5214518941.

The spelling of 80353939 in words is "eighty million, three hundred fifty-three thousand, nine hundred thirty-nine".

Divisors: 1 271 296509 80353939