4399420 has 12 divisors (see below), whose sum is σ = 9238824. Its totient is φ = 1759760.

The previous prime is 4399399. The next prime is 4399457. The reversal of 4399420 is 249934.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109966 + ... + 110005.

It is an arithmetic number, because the mean of its divisors is an integer number (769902).

Almost surely, 2^4399420 is an apocalyptic number.

It is an amenable number.

4399420 is an abundant number, since it is smaller than the sum of its proper divisors (4839404).

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

4399420 is a wasteful number, since it uses less digits than its factorization.

4399420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219980 (or 219978 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4399420 is about 2097.4794397085. The cubic root of 4399420 is about 163.8570537077.

It can be divided in two parts, 4 and 399420, that added together give a square (399424 = 632²).

The spelling of 4399420 in words is "four million, three hundred ninety-nine thousand, four hundred twenty".