308949894 has 48 divisors (see below), whose sum is σ = 745804800. Its totient is φ = 91626480.

The previous prime is 308949859. The next prime is 308949923. The reversal of 308949894 is 498949803.

It is a super-2 number, since 2×308949894² = 190900074005222472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 308949894.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7294 + ... + 25905.

It is an arithmetic number, because the mean of its divisors is an integer number (15537600).

Almost surely, 2^308949894 is an apocalyptic number.

308949894 is an abundant number, since it is smaller than the sum of its proper divisors (436854906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308949894 is a wasteful number, since it uses less digits than its factorization.

308949894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33265 (or 33262 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 308949894 is about 17576.9705580911. The cubic root of 308949894 is about 676.0248858759.

The spelling of 308949894 in words is "three hundred eight million, nine hundred forty-nine thousand, eight hundred ninety-four".