4390925 has 24 divisors (see below), whose sum is σ = 6791232. Its totient is φ = 2736000.

The previous prime is 4390921. The next prime is 4390937. The reversal of 4390925 is 5290934.

It is not a de Polignac number, because 4390925 - 2² = 4390921 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4390891 and 4390900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 785 + ... + 3065.

It is an arithmetic number, because the mean of its divisors is an integer number (282968).

Almost surely, 2^4390925 is an apocalyptic number.

It is an amenable number.

4390925 is a deficient number, since it is larger than the sum of its proper divisors (2400307).

4390925 is a wasteful number, since it uses less digits than its factorization.

4390925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 4390925 is about 2095.4534115556. The cubic root of 4390925 is about 163.7515199051.

Subtracting 4390925 from its reverse (5290934), we obtain a palindrome (900009).

It can be divided in two parts, 43909 and 25, that added together give a palindrome (43934).

The spelling of 4390925 in words is "four million, three hundred ninety thousand, nine hundred twenty-five".