11308639 has 2 divisors, whose sum is σ = 11308640. Its totient is φ = 11308638.

The previous prime is 11308631. The next prime is 11308651. The reversal of 11308639 is 93680311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11308639 - 2³ = 11308631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11308639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11308631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5654319 + 5654320.

It is an arithmetic number, because the mean of its divisors is an integer number (5654320).

Almost surely, 2^11308639 is an apocalyptic number.

11308639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11308639 is an equidigital number, since it uses as much as digits as its factorization.

11308639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 11308639 is about 3362.8319910456. The cubic root of 11308639 is about 224.4588741190.

The spelling of 11308639 in words is "eleven million, three hundred eight thousand, six hundred thirty-nine".