309416948 has 12 divisors (see below), whose sum is σ = 541633092. Its totient is φ = 154664640.

The previous prime is 309416927. The next prime is 309416963. The reversal of 309416948 is 849614903.

It can be written as a sum of positive squares in 2 ways, for example, as 98644624 + 210772324 = 9932^2 + 14518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 309416899 and 309416908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8936 + ... + 26432.

It is an arithmetic number, because the mean of its divisors is an integer number (45136091).

Almost surely, 2^309416948 is an apocalyptic number.

It is an amenable number.

309416948 is a deficient number, since it is larger than the sum of its proper divisors (232216144).

309416948 is a wasteful number, since it uses less digits than its factorization.

309416948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21922 (or 21920 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 309416948 is about 17590.2515047398. The cubic root of 309416948 is about 676.3653738323.

The spelling of 309416948 in words is "three hundred nine million, four hundred sixteen thousand, nine hundred forty-eight".