396547523 has 4 divisors (see below), whose sum is σ = 401325288. Its totient is φ = 391769760.

The previous prime is 396547517. The next prime is 396547549. The reversal of 396547523 is 325745693.

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

It is a cyclic number.

It is not a de Polignac number, because 396547523 - 2⁸ = 396547267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396547553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2388758 + ... + 2388923.

It is an arithmetic number, because the mean of its divisors is an integer number (100331322).

Almost surely, 2^396547523 is an apocalyptic number.

396547523 is a deficient number, since it is larger than the sum of its proper divisors (4777765).

396547523 is an equidigital number, since it uses as much as digits as its factorization.

396547523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777764.

The product of its digits is 680400, while the sum is 44.

The square root of 396547523 is about 19913.5010231752. The cubic root of 396547523 is about 734.6803323982.

The spelling of 396547523 in words is "three hundred ninety-six million, five hundred forty-seven thousand, five hundred twenty-three".