4639390 has 32 divisors (see below), whose sum is σ = 9621504. Its totient is φ = 1577760.

The previous prime is 4639387. The next prime is 4639423. The reversal of 4639390 is 939364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13197 + ... + 13543.

It is an arithmetic number, because the mean of its divisors is an integer number (300672).

Almost surely, 2^4639390 is an apocalyptic number.

4639390 is an abundant number, since it is smaller than the sum of its proper divisors (4982114).

4639390 is a wasteful number, since it uses less digits than its factorization.

4639390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 4639390 is about 2153.9243255045. The cubic root of 4639390 is about 166.7837088986.

The spelling of 4639390 in words is "four million, six hundred thirty-nine thousand, three hundred ninety".