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980949 = 3326983
BaseRepresentation
bin11101111011111010101
31211211121110
43233133111
5222342244
633005233
711223624
oct3573725
91754543
10980949
11610002
123b3819
13284658
141b76bb
151459b9
hexef7d5

980949 has 4 divisors (see below), whose sum is σ = 1307936. Its totient is φ = 653964.

The previous prime is 980921. The next prime is 980957. The reversal of 980949 is 949089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949089 = 3316363.

It is not a de Polignac number, because 980949 - 212 = 976853 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 980949.

It is not an unprimeable number, because it can be changed into a prime (980909) 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, 163489 + ... + 163494.

It is an arithmetic number, because the mean of its divisors is an integer number (326984).

2980949 is an apocalyptic number.

It is an amenable number.

980949 is a deficient number, since it is larger than the sum of its proper divisors (326987).

980949 is a wasteful number, since it uses less digits than its factorization.

980949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326986.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 980949 is about 990.4286950609. The cubic root of 980949 is about 99.3608907622.

The spelling of 980949 in words is "nine hundred eighty thousand, nine hundred forty-nine".

Divisors: 1 3 326983 980949