396043642 has 8 divisors (see below), whose sum is σ = 594321300. Its totient is φ = 197936544.

The previous prime is 396043621. The next prime is 396043651. The reversal of 396043642 is 246340693.

It can be written as a sum of positive squares in 2 ways, for example, as 395970201 + 73441 = 19899^2 + 271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36667 + ... + 46222.

Almost surely, 2^396043642 is an apocalyptic number.

396043642 is a deficient number, since it is larger than the sum of its proper divisors (198277658).

396043642 is a wasteful number, since it uses less digits than its factorization.

396043642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85280.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 396043642 is about 19900.8452584306. The cubic root of 396043642 is about 734.3690217760.

The spelling of 396043642 in words is "three hundred ninety-six million, forty-three thousand, six hundred forty-two".