4390138 has 8 divisors (see below), whose sum is σ = 6607188. Its totient is φ = 2187744.

The previous prime is 4390117. The next prime is 4390151. The reversal of 4390138 is 8310934.

It can be written as a sum of positive squares in 2 ways, for example, as 4272489 + 117649 = 2067^2 + 343^2 .

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, 2881 + ... + 4132.

Almost surely, 2^4390138 is an apocalyptic number.

4390138 is a deficient number, since it is larger than the sum of its proper divisors (2217050).

4390138 is a wasteful number, since it uses less digits than its factorization.

4390138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4390138 is about 2095.2656156201. The cubic root of 4390138 is about 163.7417360785.

The spelling of 4390138 in words is "four million, three hundred ninety thousand, one hundred thirty-eight".