4389390 has 40 divisors (see below), whose sum is σ = 11804760. Its totient is φ = 1170288.

The previous prime is 4389379. The next prime is 4389401. The reversal of 4389390 is 939834.

It is an interprime number because it is at equal distance from previous prime (4389379) and next prime (4389401).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1900 + ... + 3519.

It is an arithmetic number, because the mean of its divisors is an integer number (295119).

Almost surely, 2^4389390 is an apocalyptic number.

4389390 is an abundant number, since it is smaller than the sum of its proper divisors (7415370).

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

4389390 is a wasteful number, since it uses less digits than its factorization.

4389390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5438 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 4389390 is about 2095.0871103608. The cubic root of 4389390 is about 163.7324360083.

The spelling of 4389390 in words is "four million, three hundred eighty-nine thousand, three hundred ninety".