4399642 has 8 divisors (see below), whose sum is σ = 7107156. Its totient is φ = 2030592.

The previous prime is 4399639. The next prime is 4399663. The reversal of 4399642 is 2469934.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 35721 = 2089^2 + 189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 84583 + ... + 84634.

Almost surely, 2^4399642 is an apocalyptic number.

4399642 is a deficient number, since it is larger than the sum of its proper divisors (2707514).

4399642 is a wasteful number, since it uses less digits than its factorization.

4399642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169232.

The product of its digits is 46656, while the sum is 37.

The square root of 4399642 is about 2097.5323597027. The cubic root of 4399642 is about 163.8598098024.

It can be divided in two parts, 4399 and 642, that added together give a square (5041 = 71²).

The spelling of 4399642 in words is "four million, three hundred ninety-nine thousand, six hundred forty-two".