11720039 has 2 divisors, whose sum is σ = 11720040. Its totient is φ = 11720038.

The previous prime is 11720029. The next prime is 11720047. The reversal of 11720039 is 93002711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11720039 - 2¹² = 11715943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11719996 and 11720023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11720029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860019 + 5860020.

It is an arithmetic number, because the mean of its divisors is an integer number (5860020).

Almost surely, 2^11720039 is an apocalyptic number.

11720039 is a deficient number, since it is larger than the sum of its proper divisors (1).

11720039 is an equidigital number, since it uses as much as digits as its factorization.

11720039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 11720039 is about 3423.4542497308. The cubic root of 11720039 is about 227.1484018643.

The spelling of 11720039 in words is "eleven million, seven hundred twenty thousand, thirty-nine".