396127643 has 4 divisors (see below), whose sum is σ = 413350608. Its totient is φ = 378904680.

The previous prime is 396127639. The next prime is 396127649. The reversal of 396127643 is 346721693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346721693 = 743 ⋅466651.

It is a cyclic number.

It is not a de Polignac number, because 396127643 - 2² = 396127639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396127643.

It is not an unprimeable number, because it can be changed into a prime (396127649) 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, 8611448 + ... + 8611493.

It is an arithmetic number, because the mean of its divisors is an integer number (103337652).

Almost surely, 2^396127643 is an apocalyptic number.

396127643 is a deficient number, since it is larger than the sum of its proper divisors (17222965).

396127643 is a wasteful number, since it uses less digits than its factorization.

396127643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17222964.

The product of its digits is 163296, while the sum is 41.

The square root of 396127643 is about 19902.9556347795. The cubic root of 396127643 is about 734.4209380842.

The spelling of 396127643 in words is "three hundred ninety-six million, one hundred twenty-seven thousand, six hundred forty-three".