4399690 has 8 divisors (see below), whose sum is σ = 7919460. Its totient is φ = 1759872.

The previous prime is 4399679. The next prime is 4399699. The reversal of 4399690 is 969934.

It can be written as a sum of positive squares in 2 ways, for example, as 4036081 + 363609 = 2009^2 + 603^2 .

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

It is a super-2 number, since 2×4399690² = 38714544192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4399699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219975 + ... + 219994.

Almost surely, 2^4399690 is an apocalyptic number.

4399690 is a deficient number, since it is larger than the sum of its proper divisors (3519770).

4399690 is a wasteful number, since it uses less digits than its factorization.

4399690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439976.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 4399690 is about 2097.5438016881. The cubic root of 4399690 is about 163.8604057026.

The spelling of 4399690 in words is "four million, three hundred ninety-nine thousand, six hundred ninety".