396269978 has 32 divisors (see below), whose sum is σ = 664448400. Its totient is φ = 175988736.

The previous prime is 396269977. The next prime is 396269981. The reversal of 396269978 is 879962693.

It can be written as a sum of positive squares in 8 ways, for example, as 31956409 + 364313569 = 5653^2 + 19087^2 .

It is not an unprimeable number, because it can be changed into a prime (396269977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280538 + ... + 281946.

Almost surely, 2^396269978 is an apocalyptic number.

396269978 is a deficient number, since it is larger than the sum of its proper divisors (268178422).

396269978 is a wasteful number, since it uses less digits than its factorization.

396269978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its digits is 8817984, while the sum is 59.

The square root of 396269978 is about 19906.5310388325. The cubic root of 396269978 is about 734.5088906153.

The spelling of 396269978 in words is "three hundred ninety-six million, two hundred sixty-nine thousand, nine hundred seventy-eight".