396380540 has 12 divisors (see below), whose sum is σ = 832399176. Its totient is φ = 158552208.

The previous prime is 396380533. The next prime is 396380557. The reversal of 396380540 is 45083693.

It is a junction number, because it is equal to n+sod(n) for n = 396380494 and 396380503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9909494 + ... + 9909533.

It is an arithmetic number, because the mean of its divisors is an integer number (69366598).

Almost surely, 2^396380540 is an apocalyptic number.

It is an amenable number.

396380540 is an abundant number, since it is smaller than the sum of its proper divisors (436018636).

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

396380540 is a wasteful number, since it uses less digits than its factorization.

396380540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19819036 (or 19819034 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 396380540 is about 19909.3078734546. The cubic root of 396380540 is about 734.5771952435.

The spelling of 396380540 in words is "three hundred ninety-six million, three hundred eighty thousand, five hundred forty".