307993 has 8 divisors (see below), whose sum is σ = 367488. Its totient is φ = 252384.

The previous prime is 307969. The next prime is 308003. The reversal of 307993 is 399703.

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

It is a cyclic number.

It is not a de Polignac number, because 307993 - 2⁹ = 307481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (45936).

2³⁰⁷⁹⁹³ is an apocalyptic number.

It is an amenable number.

307993 is a deficient number, since it is larger than the sum of its proper divisors (59495).

307993 is a wasteful number, since it uses less digits than its factorization.

307993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 307993 is about 554.9711704224. The cubic root of 307993 is about 67.5326225484.

The spelling of 307993 in words is "three hundred seven thousand, nine hundred ninety-three".