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13969475 = 521353811
BaseRepresentation
bin110101010010…
…100001000011
3222021201111222
4311102201003
512034010400
61215225255
7226511222
oct65224103
928251458
1013969475
117981523
12481822b
132b81580
141bd8cb9
15135e185
hexd52843

13969475 has 24 divisors (see below), whose sum is σ = 19030032. Its totient is φ = 10108800.

The previous prime is 13969469. The next prime is 13969493. The reversal of 13969475 is 57496931.

It is not a de Polignac number, because 13969475 - 214 = 13953091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16820 + ... + 17630.

It is an arithmetic number, because the mean of its divisors is an integer number (792918).

Almost surely, 213969475 is an apocalyptic number.

13969475 is a deficient number, since it is larger than the sum of its proper divisors (5060557).

13969475 is a wasteful number, since it uses less digits than its factorization.

13969475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 882 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 13969475 is about 3737.5760861821. The cubic root of 13969475 is about 240.8389332585.

The spelling of 13969475 in words is "thirteen million, nine hundred sixty-nine thousand, four hundred seventy-five".

Divisors: 1 5 13 25 53 65 265 325 689 811 1325 3445 4055 10543 17225 20275 42983 52715 214915 263575 558779 1074575 2793895 13969475