396818722 has 4 divisors (see below), whose sum is σ = 595228086. Its totient is φ = 198409360.

The previous prime is 396818711. The next prime is 396818731. The reversal of 396818722 is 227818693.

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

It can be written as a sum of positive squares in only one way, i.e., 364771801 + 32046921 = 19099^2 + 5661^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99204679 + ... + 99204682.

Almost surely, 2^396818722 is an apocalyptic number.

396818722 is a deficient number, since it is larger than the sum of its proper divisors (198409364).

396818722 is a wasteful number, since it uses less digits than its factorization.

396818722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198409363.

The product of its digits is 290304, while the sum is 46.

The square root of 396818722 is about 19920.3092847476. The cubic root of 396818722 is about 734.8477769507.

The spelling of 396818722 in words is "three hundred ninety-six million, eight hundred eighteen thousand, seven hundred twenty-two".