649954339 has 8 divisors (see below), whose sum is σ = 671311872. Its totient is φ = 628621320.

The previous prime is 649954313. The next prime is 649954363. The reversal of 649954339 is 933459946.

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 649954339 - 2²⁵ = 616399907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649954369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58872 + ... + 69034.

It is an arithmetic number, because the mean of its divisors is an integer number (83913984).

Almost surely, 2^649954339 is an apocalyptic number.

649954339 is a deficient number, since it is larger than the sum of its proper divisors (21357533).

649954339 is a wasteful number, since it uses less digits than its factorization.

649954339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257.

The product of its digits is 3149280, while the sum is 52.

The square root of 649954339 is about 25494.2020663523. The cubic root of 649954339 is about 866.2188210999.

The spelling of 649954339 in words is "six hundred forty-nine million, nine hundred fifty-four thousand, three hundred thirty-nine".