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80949 = 3112223
BaseRepresentation
bin10011110000110101
311010001010
4103300311
510042244
61422433
7455001
oct236065
9133033
1080949
1155900
123aa19
132aacb
1421701
1518eb9
hex13c35

80949 has 12 divisors (see below), whose sum is σ = 119168. Its totient is φ = 48840.

The previous prime is 80933. The next prime is 80953. The reversal of 80949 is 94908.

It is not a de Polignac number, because 80949 - 24 = 80933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252 + ... + 474.

280949 is an apocalyptic number.

It is an amenable number.

80949 is a deficient number, since it is larger than the sum of its proper divisors (38219).

80949 is a wasteful number, since it uses less digits than its factorization.

80949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 80949 is about 284.5153774403. The cubic root of 80949 is about 43.2584043721.

It can be divided in two parts, 809 and 49, that added together give a palindrome (858).

The spelling of 80949 in words is "eighty thousand, nine hundred forty-nine".

Divisors: 1 3 11 33 121 223 363 669 2453 7359 26983 80949