396647015 has 8 divisors (see below), whose sum is σ = 491330688. Its totient is φ = 307081440.

The previous prime is 396647011. The next prime is 396647023. The reversal of 396647015 is 510746693.

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

It is not a de Polignac number, because 396647015 - 2² = 396647011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396647011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279352 + ... + 1279661.

It is an arithmetic number, because the mean of its divisors is an integer number (61416336).

Almost surely, 2^396647015 is an apocalyptic number.

396647015 is a deficient number, since it is larger than the sum of its proper divisors (94683673).

396647015 is a wasteful number, since it uses less digits than its factorization.

396647015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559049.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 396647015 is about 19915.9989706768. The cubic root of 396647015 is about 734.7417699303.

Adding to 396647015 its sum of digits (41), we get a square (396647056 = 19916²).

The spelling of 396647015 in words is "three hundred ninety-six million, six hundred forty-seven thousand, fifteen".