307947923397 has 6 divisors (see below), whose sum is σ = 444813667142. Its totient is φ = 205298615592.

The previous prime is 307947923383. The next prime is 307947923431. The reversal of 307947923397 is 793329749703.

307947923397 is a `hidden beast` number, since 3 + 0 + 79 + 479 + 2 + 3 + 3 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 272568570561 + 35379352836 = 522081^2 + 188094^2 .

It is not a de Polignac number, because 307947923397 - 2⁸ = 307947923141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307947923377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17108217958 + ... + 17108217975.

Almost surely, 2^307947923397 is an apocalyptic number.

It is an amenable number.

307947923397 is a deficient number, since it is larger than the sum of its proper divisors (136865743745).

307947923397 is a wasteful number, since it uses less digits than its factorization.

307947923397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34216435939 (or 34216435936 counting only the distinct ones).

The product of its (nonzero) digits is 54010152, while the sum is 63.

The spelling of 307947923397 in words is "three hundred seven billion, nine hundred forty-seven million, nine hundred twenty-three thousand, three hundred ninety-seven".