308949646 has 8 divisors (see below), whose sum is σ = 464189760. Its totient is φ = 154219728.

The previous prime is 308949643. The next prime is 308949647. The reversal of 308949646 is 646949803.

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

It is a self number, because there is not a number n which added to its sum of digits gives 308949646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308949643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126031 + ... + 128458.

It is an arithmetic number, because the mean of its divisors is an integer number (58023720).

Almost surely, 2^308949646 is an apocalyptic number.

308949646 is a deficient number, since it is larger than the sum of its proper divisors (155240114).

308949646 is a wasteful number, since it uses less digits than its factorization.

308949646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255098.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 308949646 is about 17576.9635034041. The cubic root of 308949646 is about 676.0247049898.

The spelling of 308949646 in words is "three hundred eight million, nine hundred forty-nine thousand, six hundred forty-six".