396457 has 4 divisors (see below), whose sum is σ = 419796. Its totient is φ = 373120.

The previous prime is 396449. The next prime is 396479. The reversal of 396457 is 754693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754693 = 43 ⋅17551.

It can be written as a sum of positive squares in 2 ways, for example, as 249001 + 147456 = 499^2 + 384^2 .

It is a cyclic number.

It is not a de Polignac number, because 396457 - 2³ = 396449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396427) 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, 11644 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (104949).

2³⁹⁶⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

396457 is a deficient number, since it is larger than the sum of its proper divisors (23339).

396457 is a wasteful number, since it uses less digits than its factorization.

396457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23338.

The product of its digits is 22680, while the sum is 34.

The square root of 396457 is about 629.6483145376. The cubic root of 396457 is about 73.4624424405.

The spelling of 396457 in words is "three hundred ninety-six thousand, four hundred fifty-seven".