4390434 has 24 divisors (see below), whose sum is σ = 9582300. Its totient is φ = 1452768.

The previous prime is 4390433. The next prime is 4390453. The reversal of 4390434 is 4340934.

It can be written as a sum of positive squares in 2 ways, for example, as 3294225 + 1096209 = 1815^2 + 1047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4390398 and 4390407.

It is not an unprimeable number, because it can be changed into a prime (4390433) 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 in 11 ways as a sum of consecutive naturals, for example, 1864 + ... + 3500.

Almost surely, 2^4390434 is an apocalyptic number.

4390434 is an abundant number, since it is smaller than the sum of its proper divisors (5191866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4390434 is a wasteful number, since it uses less digits than its factorization.

4390434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 4390434 is about 2095.3362498654. The cubic root of 4390434 is about 163.7454160285.

The spelling of 4390434 in words is "four million, three hundred ninety thousand, four hundred thirty-four".