396824851 has 4 divisors (see below), whose sum is σ = 396878472. Its totient is φ = 396771232.

The previous prime is 396824839. The next prime is 396824873. The reversal of 396824851 is 158428693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158428693 = 31 ⋅5110603.

It is a cyclic number.

It is not a de Polignac number, because 396824851 - 2¹³ = 396816659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396824881) 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, 13510 + ... + 31243.

It is an arithmetic number, because the mean of its divisors is an integer number (99219618).

Almost surely, 2^396824851 is an apocalyptic number.

396824851 is a deficient number, since it is larger than the sum of its proper divisors (53621).

396824851 is an equidigital number, since it uses as much as digits as its factorization.

396824851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53620.

The product of its digits is 414720, while the sum is 46.

The square root of 396824851 is about 19920.4631221265. The cubic root of 396824851 is about 734.8515602558.

The spelling of 396824851 in words is "three hundred ninety-six million, eight hundred twenty-four thousand, eight hundred fifty-one".