396861547 has 8 divisors (see below), whose sum is σ = 403689440. Its totient is φ = 390044160.

The previous prime is 396861533. The next prime is 396861557. The reversal of 396861547 is 745168693.

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

It is a cyclic number.

It is not a de Polignac number, because 396861547 - 2²³ = 388472939 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 396861547.

It is not an unprimeable number, because it can be changed into a prime (396861557) 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, 127354 + ... + 130432.

It is an arithmetic number, because the mean of its divisors is an integer number (50461180).

Almost surely, 2^396861547 is an apocalyptic number.

396861547 is a deficient number, since it is larger than the sum of its proper divisors (6827893).

396861547 is a wasteful number, since it uses less digits than its factorization.

396861547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253.

The product of its digits is 1088640, while the sum is 49.

The square root of 396861547 is about 19921.3841637573. The cubic root of 396861547 is about 734.8742111235.

The spelling of 396861547 in words is "three hundred ninety-six million, eight hundred sixty-one thousand, five hundred forty-seven".