396861538 has 8 divisors (see below), whose sum is σ = 599980032. Its totient is φ = 196868196.

The previous prime is 396861533. The next prime is 396861557. The reversal of 396861538 is 835168693.

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

It is a junction number, because it is equal to n+sod(n) for n = 396861491 and 396861500.

It is not an unprimeable number, because it can be changed into a prime (396861533) 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, 780970 + ... + 781477.

It is an arithmetic number, because the mean of its divisors is an integer number (74997504).

Almost surely, 2^396861538 is an apocalyptic number.

396861538 is a deficient number, since it is larger than the sum of its proper divisors (203118494).

396861538 is a wasteful number, since it uses less digits than its factorization.

396861538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562576.

The product of its digits is 933120, while the sum is 49.

The square root of 396861538 is about 19921.3839378694. The cubic root of 396861538 is about 734.8742055684.

The spelling of 396861538 in words is "three hundred ninety-six million, eight hundred sixty-one thousand, five hundred thirty-eight".