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80090439 = 31113238117
BaseRepresentation
bin1001100011000…
…01010101000111
312120201000102120
410301201111013
5131000343224
611540341023
71661520552
oct461412507
9176630376
1080090439
1141233150
12229a4773
13137925c0
14a8cb699
157070779
hex4c61547

80090439 has 32 divisors (see below), whose sum is σ = 130927104. Its totient is φ = 42852480.

The previous prime is 80090419. The next prime is 80090441. The reversal of 80090439 is 93409008.

It is not a de Polignac number, because 80090439 - 25 = 80090407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80090419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5809 + ... + 13925.

It is an arithmetic number, because the mean of its divisors is an integer number (4091472).

Almost surely, 280090439 is an apocalyptic number.

80090439 is a deficient number, since it is larger than the sum of its proper divisors (50836665).

80090439 is a wasteful number, since it uses less digits than its factorization.

80090439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8167.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 80090439 is about 8949.3261757520. The cubic root of 80090439 is about 431.0492476245.

The spelling of 80090439 in words is "eighty million, ninety thousand, four hundred thirty-nine".

Divisors: 1 3 11 13 23 33 39 69 143 253 299 429 759 897 3289 8117 9867 24351 89287 105521 186691 267861 316563 560073 1160731 2053601 2426983 3482193 6160803 7280949 26696813 80090439