4385890 has 8 divisors (see below), whose sum is σ = 7894620. Its totient is φ = 1754352.

The previous prime is 4385879. The next prime is 4385897. The reversal of 4385890 is 985834.

It can be written as a sum of positive squares in 2 ways, for example, as 4198401 + 187489 = 2049^2 + 433^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (4385897) 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, 219285 + ... + 219304.

Almost surely, 2^4385890 is an apocalyptic number.

4385890 is a deficient number, since it is larger than the sum of its proper divisors (3508730).

4385890 is a wasteful number, since it uses less digits than its factorization.

4385890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438596.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 4385890 is about 2094.2516563202. The cubic root of 4385890 is about 163.6889055929.

It can be divided in two parts, 438 and 5890, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 4385890 in words is "four million, three hundred eighty-five thousand, eight hundred ninety".