307999447 has 12 divisors (see below), whose sum is σ = 361578360. Its totient is φ = 261572976.

The previous prime is 307999423. The next prime is 307999457. The reversal of 307999447 is 744999703.

It is a de Polignac number, because none of the positive numbers 2^k-307999447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 307999394 and 307999403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307999457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23493 + ... + 34174.

It is an arithmetic number, because the mean of its divisors is an integer number (30131530).

Almost surely, 2^307999447 is an apocalyptic number.

307999447 is a deficient number, since it is larger than the sum of its proper divisors (53578913).

307999447 is a wasteful number, since it uses less digits than its factorization.

307999447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57790 (or 57783 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 307999447 is about 17549.9130197275. The cubic root of 307999447 is about 675.3309374936.

The spelling of 307999447 in words is "three hundred seven million, nine hundred ninety-nine thousand, four hundred forty-seven".