649929323 has 4 divisors (see below), whose sum is σ = 651096720. Its totient is φ = 648761928.

The previous prime is 649929317. The next prime is 649929337. The reversal of 649929323 is 323929946.

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

It is a cyclic number.

It is not a de Polignac number, because 649929323 - 2⁴ = 649929307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649929373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582863 + ... + 583976.

It is an arithmetic number, because the mean of its divisors is an integer number (162774180).

Almost surely, 2^649929323 is an apocalyptic number.

649929323 is a deficient number, since it is larger than the sum of its proper divisors (1167397).

649929323 is a wasteful number, since it uses less digits than its factorization.

649929323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167396.

The product of its digits is 629856, while the sum is 47.

The square root of 649929323 is about 25493.7114402748. The cubic root of 649929323 is about 866.2077076997.

The spelling of 649929323 in words is "six hundred forty-nine million, nine hundred twenty-nine thousand, three hundred twenty-three".