2011939 has 2 divisors, whose sum is σ = 2011940. Its totient is φ = 2011938.

The previous prime is 2011913. The next prime is 2011951. The reversal of 2011939 is 9391102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011939 - 2⁵ = 2011907 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005969 + 1005970.

It is an arithmetic number, because the mean of its divisors is an integer number (1005970).

2^2011939 is an apocalyptic number.

2011939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011939 is an equidigital number, since it uses as much as digits as its factorization.

2011939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2011939 is about 1418.4283556105. The cubic root of 2011939 is about 126.2423110698.

The spelling of 2011939 in words is "two million, eleven thousand, nine hundred thirty-nine".