2193967 has 2 divisors, whose sum is σ = 2193968. Its totient is φ = 2193966.

The previous prime is 2193959. The next prime is 2193973. The reversal of 2193967 is 7693912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2193967 - 2³ = 2193959 is a prime.

2193967 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2193167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096983 + 1096984.

It is an arithmetic number, because the mean of its divisors is an integer number (1096984).

2^2193967 is an apocalyptic number.

2193967 is a deficient number, since it is larger than the sum of its proper divisors (1).

2193967 is an equidigital number, since it uses as much as digits as its factorization.

2193967 is an evil number, because the sum of its binary digits is even.

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

The square root of 2193967 is about 1481.2045773626. The cubic root of 2193967 is about 129.9401499650.

Subtracting 2193967 from its reverse (7693912), we obtain a palindrome (5499945).

It can be divided in two parts, 2193 and 967, that added together give a triangular number (3160 = T₇₉).

The spelling of 2193967 in words is "two million, one hundred ninety-three thousand, nine hundred sixty-seven".