439250138 has 8 divisors (see below), whose sum is σ = 674945460. Its totient is φ = 214268320.

The previous prime is 439250107. The next prime is 439250173. The reversal of 439250138 is 831052934.

It can be written as a sum of positive squares in 2 ways, for example, as 439195849 + 54289 = 20957^2 + 233^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 439250098 and 439250107.

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, 2678273 + ... + 2678436.

Almost surely, 2^439250138 is an apocalyptic number.

439250138 is a deficient number, since it is larger than the sum of its proper divisors (235695322).

439250138 is a wasteful number, since it uses less digits than its factorization.

439250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356752.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 439250138 is about 20958.2952073875. The cubic root of 439250138 is about 760.1581722957.

The spelling of 439250138 in words is "four hundred thirty-nine million, two hundred fifty thousand, one hundred thirty-eight".