649059479 has 8 divisors (see below), whose sum is σ = 667753632. Its totient is φ = 630501760.

The previous prime is 649059461. The next prime is 649059491. The reversal of 649059479 is 974950946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649059479 - 2⁸ = 649059223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 649059479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649059449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24419 + ... + 43524.

It is an arithmetic number, because the mean of its divisors is an integer number (83469204).

Almost surely, 2^649059479 is an apocalyptic number.

649059479 is a deficient number, since it is larger than the sum of its proper divisors (18694153).

649059479 is a wasteful number, since it uses less digits than its factorization.

649059479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68217.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 649059479 is about 25476.6457564570. The cubic root of 649059479 is about 865.8211005520.

The spelling of 649059479 in words is "six hundred forty-nine million, fifty-nine thousand, four hundred seventy-nine".