393205045 has 8 divisors (see below), whose sum is σ = 472776120. Its totient is φ = 313944000.

The previous prime is 393205013. The next prime is 393205091. The reversal of 393205045 is 540502393.

It can be written as a sum of positive squares in 4 ways, for example, as 186104164 + 207100881 = 13642^2 + 14391^2 .

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

It is not a de Polignac number, because 393205045 - 2⁵ = 393205013 is a prime.

It is a super-2 number, since 2×393205045² = 309220414826904050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393204998 and 393205016.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 74706 + ... + 79795.

It is an arithmetic number, because the mean of its divisors is an integer number (59097015).

Almost surely, 2^393205045 is an apocalyptic number.

It is an amenable number.

393205045 is a deficient number, since it is larger than the sum of its proper divisors (79571075).

393205045 is a wasteful number, since it uses less digits than its factorization.

393205045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155015.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 393205045 is about 19829.3985032325. The cubic root of 393205045 is about 732.6103115986.

The spelling of 393205045 in words is "three hundred ninety-three million, two hundred five thousand, forty-five".