4390427 has 4 divisors (see below), whose sum is σ = 4452336. Its totient is φ = 4328520.

The previous prime is 4390417. The next prime is 4390433. The reversal of 4390427 is 7240934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7240934 = 2 ⋅3620467.

It is a cyclic number.

It is not a de Polignac number, because 4390427 - 2¹⁰ = 4389403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4390427.

It is not an unprimeable number, because it can be changed into a prime (4390417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30848 + ... + 30989.

It is an arithmetic number, because the mean of its divisors is an integer number (1113084).

Almost surely, 2^4390427 is an apocalyptic number.

4390427 is a deficient number, since it is larger than the sum of its proper divisors (61909).

4390427 is an equidigital number, since it uses as much as digits as its factorization.

4390427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61908.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 4390427 is about 2095.3345794884. The cubic root of 4390427 is about 163.7453290045.

The spelling of 4390427 in words is "four million, three hundred ninety thousand, four hundred twenty-seven".