4394649586 has 4 divisors (see below), whose sum is σ = 6591974382. Its totient is φ = 2197324792.

The previous prime is 4394649563. The next prime is 4394649599. The reversal of 4394649586 is 6859464934.

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., 4310579025 + 84070561 = 65655^2 + 9169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4394649586.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098662395 + ... + 1098662398.

Almost surely, 2^4394649586 is an apocalyptic number.

4394649586 is a deficient number, since it is larger than the sum of its proper divisors (2197324796).

4394649586 is a wasteful number, since it uses less digits than its factorization.

4394649586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197324795.

The product of its digits is 22394880, while the sum is 58.

The square root of 4394649586 is about 66292.1532762362. The cubic root of 4394649586 is about 1637.9780736156.

The spelling of 4394649586 in words is "four billion, three hundred ninety-four million, six hundred forty-nine thousand, five hundred eighty-six".