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13214399 = 111201309
BaseRepresentation
bin110010011010…
…001010111111
3220212100202012
4302122022333
511340330044
61151121435
7220214642
oct62321277
926770665
1013214399
1175061a0
12451327b
132978993
141a7da59
15126059e
hexc9a2bf

13214399 has 4 divisors (see below), whose sum is σ = 14415720. Its totient is φ = 12013080.

The previous prime is 13214371. The next prime is 13214413. The reversal of 13214399 is 99341231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99341231 = 119031021.

It is a cyclic number.

It is not a de Polignac number, because 13214399 - 220 = 12165823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13214359) 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, 600644 + ... + 600665.

It is an arithmetic number, because the mean of its divisors is an integer number (3603930).

Almost surely, 213214399 is an apocalyptic number.

13214399 is a deficient number, since it is larger than the sum of its proper divisors (1201321).

13214399 is a wasteful number, since it uses less digits than its factorization.

13214399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201320.

The product of its digits is 5832, while the sum is 32.

The square root of 13214399 is about 3635.1614819702. The cubic root of 13214399 is about 236.4190522254.

It can be divided in two parts, 13 and 214399, that added together give a palindrome (214412).

The spelling of 13214399 in words is "thirteen million, two hundred fourteen thousand, three hundred ninety-nine".

Divisors: 1 11 1201309 13214399