11948639 has 2 divisors, whose sum is σ = 11948640. Its totient is φ = 11948638.

The previous prime is 11948617. The next prime is 11948647. The reversal of 11948639 is 93684911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11948639 - 2⁸ = 11948383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11948596 and 11948605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11948239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5974319 + 5974320.

It is an arithmetic number, because the mean of its divisors is an integer number (5974320).

Almost surely, 2^11948639 is an apocalyptic number.

11948639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11948639 is an equidigital number, since it uses as much as digits as its factorization.

11948639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 11948639 is about 3456.6803439138. The cubic root of 11948639 is about 228.6157499060.

The spelling of 11948639 in words is "eleven million, nine hundred forty-eight thousand, six hundred thirty-nine".