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80396289 = 328932921
BaseRepresentation
bin1001100101011…
…00000000000001
312121021112222100
410302230000001
5131040140124
611551101013
71664233341
oct462540001
9177245870
1080396289
1141421a16
1222b11769
131386b88c
14a96ad21
1570d11c9
hex4cac001

80396289 has 6 divisors (see below), whose sum is σ = 116127986. Its totient is φ = 53597520.

The previous prime is 80396279. The next prime is 80396297. The reversal of 80396289 is 98269308.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 16524225 = 7992^2 + 4065^2 .

It is not a de Polignac number, because 80396289 - 213 = 80388097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80396209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4466452 + ... + 4466469.

It is a Proth number, since it is equal to 4907 ⋅ 214 + 1 and 4907 < 214.

Almost surely, 280396289 is an apocalyptic number.

It is an amenable number.

80396289 is a deficient number, since it is larger than the sum of its proper divisors (35731697).

80396289 is a wasteful number, since it uses less digits than its factorization.

80396289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932927 (or 8932924 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 80396289 is about 8966.3977716807. The cubic root of 80396289 is about 431.5972487337.

The spelling of 80396289 in words is "eighty million, three hundred ninety-six thousand, two hundred eighty-nine".

Divisors: 1 3 9 8932921 26798763 80396289