4640398 has 12 divisors (see below), whose sum is σ = 8097192. Its totient is φ = 1988700.

The previous prime is 4640393. The next prime is 4640399. The reversal of 4640398 is 8930464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23578 + ... + 23773.

It is an arithmetic number, because the mean of its divisors is an integer number (674766).

Almost surely, 2^4640398 is an apocalyptic number.

4640398 is a deficient number, since it is larger than the sum of its proper divisors (3456794).

4640398 is a wasteful number, since it uses less digits than its factorization.

4640398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47367 (or 47360 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4640398 is about 2154.1583043036. The cubic root of 4640398 is about 166.7957870528.

The spelling of 4640398 in words is "four million, six hundred forty thousand, three hundred ninety-eight".