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11913939 = 33441257
BaseRepresentation
bin101101011100…
…101011010011
3211102021212000
4231130223103
511022221224
61103205043
7203160342
oct55345323
924367760
1011913939
1167a8134
123ba6783
132611a8b
141821b59
1510a50c9
hexb5cad3

11913939 has 8 divisors (see below), whose sum is σ = 17650320. Its totient is φ = 7942608.

The previous prime is 11913899. The next prime is 11913953. The reversal of 11913939 is 93931911.

11913939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-11913939 is a prime.

It is a super-3 number, since 3×119139393 (a number of 22 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11913959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220602 + ... + 220655.

It is an arithmetic number, because the mean of its divisors is an integer number (2206290).

Almost surely, 211913939 is an apocalyptic number.

11913939 is a deficient number, since it is larger than the sum of its proper divisors (5736381).

11913939 is an equidigital number, since it uses as much as digits as its factorization.

11913939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441266 (or 441260 counting only the distinct ones).

The product of its digits is 6561, while the sum is 36.

The square root of 11913939 is about 3451.6574279612. The cubic root of 11913939 is about 228.3942279318.

The spelling of 11913939 in words is "eleven million, nine hundred thirteen thousand, nine hundred thirty-nine".

Divisors: 1 3 9 27 441257 1323771 3971313 11913939