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14400913 = 67214939
BaseRepresentation
bin110110111011…
…110110010001
31000002122100011
4312323312101
512141312123
61232354521
7233256112
oct66736621
930078304
1014400913
11814668a
1249a5a41
132ca2a67
141cac209
1513e6e0d
hexdbbd91

14400913 has 4 divisors (see below), whose sum is σ = 14615920. Its totient is φ = 14185908.

The previous prime is 14400899. The next prime is 14400923. The reversal of 14400913 is 31900441.

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: 31900441 = 269118589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14400913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14400923) 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, 107403 + ... + 107536.

It is an arithmetic number, because the mean of its divisors is an integer number (3653980).

Almost surely, 214400913 is an apocalyptic number.

It is an amenable number.

14400913 is a deficient number, since it is larger than the sum of its proper divisors (215007).

14400913 is an equidigital number, since it uses as much as digits as its factorization.

14400913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215006.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 14400913 is about 3794.8534886080. The cubic root of 14400913 is about 243.2932214276.

The spelling of 14400913 in words is "fourteen million, four hundred thousand, nine hundred thirteen".

Divisors: 1 67 214939 14400913