4640386 has 4 divisors (see below), whose sum is σ = 6960582. Its totient is φ = 2320192.

The previous prime is 4640369. The next prime is 4640387. The reversal of 4640386 is 6830464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4541161 + 99225 = 2131^2 + 315^2 .

It is not an unprimeable number, because it can be changed into a prime (4640387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160095 + ... + 1160098.

Almost surely, 2^4640386 is an apocalyptic number.

4640386 is a deficient number, since it is larger than the sum of its proper divisors (2320196).

4640386 is a wasteful number, since it uses less digits than its factorization.

4640386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320195.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 4640386 is about 2154.1555189911. The cubic root of 4640386 is about 166.7956432756.

The spelling of 4640386 in words is "four million, six hundred forty thousand, three hundred eighty-six".