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404889 = 3172467
BaseRepresentation
bin1100010110110011001
3202120101220
41202312121
5100424024
612402253
73304302
oct1426631
9676356
10404889
11257221
12176389
131123a4
14a77a9
157ee79
hex62d99

404889 has 12 divisors (see below), whose sum is σ = 574704. Its totient is φ = 253504.

The previous prime is 404851. The next prime is 404941. The reversal of 404889 is 988404.

It is not a de Polignac number, because 404889 - 215 = 372121 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404889.

It is not an unprimeable number, because it can be changed into a prime (404819) 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, 634 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (47892).

2404889 is an apocalyptic number.

It is an amenable number.

404889 is a deficient number, since it is larger than the sum of its proper divisors (169815).

404889 is a wasteful number, since it uses less digits than its factorization.

404889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 404889 is about 636.3088872552. The cubic root of 404889 is about 73.9796023644.

The spelling of 404889 in words is "four hundred four thousand, eight hundred eighty-nine".

Divisors: 1 3 17 51 289 467 867 1401 7939 23817 134963 404889