11869639 has 2 divisors, whose sum is σ = 11869640. Its totient is φ = 11869638.

The previous prime is 11869631. The next prime is 11869667. The reversal of 11869639 is 93696811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11869639 - 2³ = 11869631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11869595 and 11869604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11869631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934819 + 5934820.

It is an arithmetic number, because the mean of its divisors is an integer number (5934820).

Almost surely, 2^11869639 is an apocalyptic number.

11869639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11869639 is an equidigital number, since it uses as much as digits as its factorization.

11869639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 11869639 is about 3445.2342445761. The cubic root of 11869639 is about 228.1107943616.

The spelling of 11869639 in words is "eleven million, eight hundred sixty-nine thousand, six hundred thirty-nine".