396861545 has 8 divisors (see below), whose sum is σ = 476550600. Its totient is φ = 317278080.

The previous prime is 396861533. The next prime is 396861557. The reversal of 396861545 is 545168693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (396861533) and next prime (396861557).

It can be written as a sum of positive squares in 4 ways, for example, as 14776336 + 382085209 = 3844^2 + 19547^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-396861545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396861545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17876 + ... + 33365.

It is an arithmetic number, because the mean of its divisors is an integer number (59568825).

Almost surely, 2^396861545 is an apocalyptic number.

It is an amenable number.

396861545 is a deficient number, since it is larger than the sum of its proper divisors (79689055).

396861545 is a wasteful number, since it uses less digits than its factorization.

396861545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52795.

The product of its digits is 777600, while the sum is 47.

The square root of 396861545 is about 19921.3841135600. The cubic root of 396861545 is about 734.8742098891.

The spelling of 396861545 in words is "three hundred ninety-six million, eight hundred sixty-one thousand, five hundred forty-five".