7399867 has 2 divisors, whose sum is σ = 7399868. Its totient is φ = 7399866.

The previous prime is 7399853. The next prime is 7399871. The reversal of 7399867 is 7689937.

It is a strong prime.

It is an emirp because it is prime and its reverse (7689937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7399867 - 2¹⁹ = 6875579 is a prime.

It is a Chen prime.

7399867 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7399867.

It is not a weakly prime, because it can be changed into another prime (7399817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3699933 + 3699934.

It is an arithmetic number, because the mean of its divisors is an integer number (3699934).

Almost surely, 2^7399867 is an apocalyptic number.

7399867 is a deficient number, since it is larger than the sum of its proper divisors (1).

7399867 is an equidigital number, since it uses as much as digits as its factorization.

7399867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 7399867 is about 2720.2696557511. The cubic root of 7399867 is about 194.8683485690.

The spelling of 7399867 in words is "seven million, three hundred ninety-nine thousand, eight hundred sixty-seven".