2167939 has 2 divisors, whose sum is σ = 2167940. Its totient is φ = 2167938.

The previous prime is 2167937. The next prime is 2167961. The reversal of 2167939 is 9397612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2167939 - 2¹ = 2167937 is a prime.

Together with 2167937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2167898 and 2167907.

It is not a weakly prime, because it can be changed into another prime (2167933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083969 + 1083970.

It is an arithmetic number, because the mean of its divisors is an integer number (1083970).

2^2167939 is an apocalyptic number.

2167939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167939 is an equidigital number, since it uses as much as digits as its factorization.

2167939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 2167939 is about 1472.3922711017. The cubic root of 2167939 is about 129.4242586665.

The spelling of 2167939 in words is "two million, one hundred sixty-seven thousand, nine hundred thirty-nine".