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3995289 = 321726113
BaseRepresentation
bin1111001111011010011001
321111222111200
433033122121
52010322124
6221344413
745650034
oct17173231
97458450
103995289
1122897a1
121408109
13a9b69c
1476001b
1553dbc9
hex3cf699

3995289 has 12 divisors (see below), whose sum is σ = 6110676. Its totient is φ = 2506752.

The previous prime is 3995281. The next prime is 3995347. The reversal of 3995289 is 9825993.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 1172889 = 1680^2 + 1083^2 .

It is not a de Polignac number, because 3995289 - 23 = 3995281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3995281) 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, 12904 + ... + 13209.

It is an arithmetic number, because the mean of its divisors is an integer number (509223).

Almost surely, 23995289 is an apocalyptic number.

It is an amenable number.

3995289 is a deficient number, since it is larger than the sum of its proper divisors (2115387).

3995289 is a wasteful number, since it uses less digits than its factorization.

3995289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26136 (or 26133 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 3995289 is about 1998.8219030219. The cubic root of 3995289 is about 158.6777619959.

The spelling of 3995289 in words is "three million, nine hundred ninety-five thousand, two hundred eighty-nine".

Divisors: 1 3 9 17 51 153 26113 78339 235017 443921 1331763 3995289