7398427 has 2 divisors, whose sum is σ = 7398428. Its totient is φ = 7398426.

The previous prime is 7398421. The next prime is 7398431. The reversal of 7398427 is 7248937.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7398427 - 2¹⁹ = 6874139 is a prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7398427.

It is not a weakly prime, because it can be changed into another prime (7398421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3699213 + 3699214.

It is an arithmetic number, because the mean of its divisors is an integer number (3699214).

Almost surely, 2^7398427 is an apocalyptic number.

7398427 is a deficient number, since it is larger than the sum of its proper divisors (1).

7398427 is an equidigital number, since it uses as much as digits as its factorization.

7398427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 7398427 is about 2720.0049632308. The cubic root of 7398427 is about 194.8557074127.

The spelling of 7398427 in words is "seven million, three hundred ninety-eight thousand, four hundred twenty-seven".