393201497 has 4 divisors (see below), whose sum is σ = 423447780. Its totient is φ = 362955216.

The previous prime is 393201481. The next prime is 393201511. The reversal of 393201497 is 794102393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28047616 + 365153881 = 5296^2 + 19109^2 .

It is not a de Polignac number, because 393201497 - 2⁴ = 393201481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 393201497.

It is not an unprimeable number, because it can be changed into a prime (393201397) 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 3 ways as a sum of consecutive naturals, for example, 15123122 + ... + 15123147.

It is an arithmetic number, because the mean of its divisors is an integer number (105861945).

Almost surely, 2^393201497 is an apocalyptic number.

It is an amenable number.

393201497 is a deficient number, since it is larger than the sum of its proper divisors (30246283).

393201497 is a wasteful number, since it uses less digits than its factorization.

393201497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30246282.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 393201497 is about 19829.3090399035. The cubic root of 393201497 is about 732.6081080755.

The spelling of 393201497 in words is "three hundred ninety-three million, two hundred one thousand, four hundred ninety-seven".