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14979905 = 52995981
BaseRepresentation
bin111001001001…
…001101000001
31001012001120022
4321021031001
512313324110
61253023225
7241220123
oct71111501
931161508
1014979905
118501696
125024b15
133146465
141dbd213
1514ad755
hexe49341

14979905 has 4 divisors (see below), whose sum is σ = 17975892. Its totient is φ = 11983920.

The previous prime is 14979889. The next prime is 14979911. The reversal of 14979905 is 50997941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50997941 = 61518291.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 4765489 = 3196^2 + 2183^2 .

It is not a de Polignac number, because 14979905 - 24 = 14979889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497986 + ... + 1497995.

It is an arithmetic number, because the mean of its divisors is an integer number (4493973).

Almost surely, 214979905 is an apocalyptic number.

It is an amenable number.

14979905 is a deficient number, since it is larger than the sum of its proper divisors (2995987).

14979905 is an equidigital number, since it uses as much as digits as its factorization.

14979905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995986.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 14979905 is about 3870.3882234215. The cubic root of 14979905 is about 246.5110281469.

The spelling of 14979905 in words is "fourteen million, nine hundred seventy-nine thousand, nine hundred five".

Divisors: 1 5 2995981 14979905