393365247 has 16 divisors (see below), whose sum is σ = 585475968. Its totient is φ = 232858080.

The previous prime is 393365243. The next prime is 393365249. The reversal of 393365247 is 742563393.

It is not a de Polignac number, because 393365247 - 2² = 393365243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 393365199 and 393365208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393365243) 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 15 ways as a sum of consecutive naturals, for example, 137188 + ... + 140025.

It is an arithmetic number, because the mean of its divisors is an integer number (36592248).

Almost surely, 2^393365247 is an apocalyptic number.

393365247 is a deficient number, since it is larger than the sum of its proper divisors (192110721).

393365247 is a wasteful number, since it uses less digits than its factorization.

393365247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277270.

The product of its digits is 408240, while the sum is 42.

The square root of 393365247 is about 19833.4375991657. The cubic root of 393365247 is about 732.7097929447.

The spelling of 393365247 in words is "three hundred ninety-three million, three hundred sixty-five thousand, two hundred forty-seven".