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13910049 = 3619081
BaseRepresentation
bin110101000100…
…000000100001
3222011201000000
4311010000201
512030110144
61214050213
7226143036
oct65040041
928151000
1013910049
11794090a
1247a9969
132b604ca
141bc138d
15134b769
hexd44021

13910049 has 14 divisors (see below), whose sum is σ = 20856626. Its totient is φ = 9272880.

The previous prime is 13910003. The next prime is 13910051. The reversal of 13910049 is 94001931.

It can be written as a sum of positive squares in only one way, i.e., 9809424 + 4100625 = 3132^2 + 2025^2 .

It is not a de Polignac number, because 13910049 - 27 = 13909921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13910069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8812 + ... + 10269.

It is an arithmetic number, because the mean of its divisors is an integer number (1489759).

Almost surely, 213910049 is an apocalyptic number.

It is an amenable number.

13910049 is a deficient number, since it is larger than the sum of its proper divisors (6946577).

13910049 is an frugal number, since it uses more digits than its factorization.

13910049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19099 (or 19084 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13910049 is about 3729.6178088378. The cubic root of 13910049 is about 240.4969390879.

The spelling of 13910049 in words is "thirteen million, nine hundred ten thousand, forty-nine".

Divisors: 1 3 9 27 81 243 729 19081 57243 171729 515187 1545561 4636683 13910049