4378890 has 16 divisors (see below), whose sum is σ = 10509408. Its totient is φ = 1167696.

The previous prime is 4378837. The next prime is 4378897. The reversal of 4378890 is 988734.

It is not an unprimeable number, because it can be changed into a prime (4378897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72952 + ... + 73011.

It is an arithmetic number, because the mean of its divisors is an integer number (656838).

Almost surely, 2^4378890 is an apocalyptic number.

4378890 is an abundant number, since it is smaller than the sum of its proper divisors (6130518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4378890 is a wasteful number, since it uses less digits than its factorization.

4378890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145973.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 4378890 is about 2092.5797475843. The cubic root of 4378890 is about 163.6017752371.

The spelling of 4378890 in words is "four million, three hundred seventy-eight thousand, eight hundred ninety".