4045390 has 8 divisors (see below), whose sum is σ = 7281720. Its totient is φ = 1618152.

The previous prime is 4045387. The next prime is 4045399. The reversal of 4045390 is 935404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045399) 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, 202260 + ... + 202279.

It is an arithmetic number, because the mean of its divisors is an integer number (910215).

Almost surely, 2^4045390 is an apocalyptic number.

4045390 is a deficient number, since it is larger than the sum of its proper divisors (3236330).

4045390 is a wasteful number, since it uses less digits than its factorization.

4045390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404546.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 4045390 is about 2011.3154899220. The cubic root of 4045390 is about 159.3382827117.

The spelling of 4045390 in words is "four million, forty-five thousand, three hundred ninety".