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14101909 = 4128389
BaseRepresentation
bin110101110010…
…110110010101
3222112110011221
4311302312111
512102230114
61222130341
7230602303
oct65626625
928473157
1014101909
117a61a78
1248809b1
132bc9933
141c31273
151388524
hexd72d95

14101909 has 6 divisors (see below), whose sum is σ = 14455970. Its totient is φ = 13756320.

The previous prime is 14101883. The next prime is 14101937. The reversal of 14101909 is 90910141.

It can be written as a sum of positive squares in 3 ways, for example, as 16900 + 14085009 = 130^2 + 3753^2 .

It is not a de Polignac number, because 14101909 - 25 = 14101877 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 (14101709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2514 + ... + 5875.

Almost surely, 214101909 is an apocalyptic number.

It is an amenable number.

14101909 is a deficient number, since it is larger than the sum of its proper divisors (354061).

14101909 is an frugal number, since it uses more digits than its factorization.

14101909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8471 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 14101909 is about 3755.2508571332. The cubic root of 14101909 is about 241.5976112379.

The spelling of 14101909 in words is "fourteen million, one hundred one thousand, nine hundred nine".

Divisors: 1 41 1681 8389 343949 14101909