396697849 has 4 divisors (see below), whose sum is σ = 397021860. Its totient is φ = 396373840.

The previous prime is 396697843. The next prime is 396697867. The reversal of 396697849 is 948796693.

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 245235600 + 151462249 = 15660^2 + 12307^2 .

It is a cyclic number.

It is not a de Polignac number, because 396697849 - 2⁵ = 396697817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396697843) 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, 160162 + ... + 162619.

It is an arithmetic number, because the mean of its divisors is an integer number (99255465).

Almost surely, 2^396697849 is an apocalyptic number.

It is an amenable number.

396697849 is a deficient number, since it is larger than the sum of its proper divisors (324011).

396697849 is a wasteful number, since it uses less digits than its factorization.

396697849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324010.

The product of its digits is 17635968, while the sum is 61.

The square root of 396697849 is about 19917.2751399382. The cubic root of 396697849 is about 734.7731565841.

The spelling of 396697849 in words is "three hundred ninety-six million, six hundred ninety-seven thousand, eight hundred forty-nine".