649383946 has 4 divisors (see below), whose sum is σ = 974075922. Its totient is φ = 324691972.

The previous prime is 649383941. The next prime is 649383967.

649383946 is nontrivially palindromic in base 10.

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., 648975625 + 408321 = 25475^2 + 639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 649383893 and 649383902.

It is not an unprimeable number, because it can be changed into a prime (649383941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162345985 + ... + 162345988.

Almost surely, 2^649383946 is an apocalyptic number.

649383946 is a deficient number, since it is larger than the sum of its proper divisors (324691976).

649383946 is a wasteful number, since it uses less digits than its factorization.

649383946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324691975.

The product of its digits is 3359232, while the sum is 52.

The square root of 649383946 is about 25483.0128909436. The cubic root of 649383946 is about 865.9653521368.

The spelling of 649383946 in words is "six hundred forty-nine million, three hundred eighty-three thousand, nine hundred forty-six".