396634122440 has 64 divisors (see below), whose sum is σ = 905282492400. Its totient is φ = 156383281152.

The previous prime is 396634122373. The next prime is 396634122449. The reversal of 396634122440 is 44221436693.

It can be written as a sum of positive squares in 8 ways, for example, as 187889305444 + 208744816996 = 433462^2 + 456886^2 .

It is a junction number, because it is equal to n+sod(n) for n = 396634122391 and 396634122400.

It is not an unprimeable number, because it can be changed into a prime (396634122449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605804 + ... + 1077156.

Almost surely, 2^396634122440 is an apocalyptic number.

It is an amenable number.

396634122440 is an abundant number, since it is smaller than the sum of its proper divisors (508648369960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396634122440 is a wasteful number, since it uses less digits than its factorization.

396634122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471666 (or 471662 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 396634122440 in words is "three hundred ninety-six billion, six hundred thirty-four million, one hundred twenty-two thousand, four hundred forty".