387075440 has 20 divisors (see below), whose sum is σ = 899950584. Its totient is φ = 154830144.

The previous prime is 387075433. The next prime is 387075473. The reversal of 387075440 is 44570783.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 387075394 and 387075403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2419142 + ... + 2419301.

Almost surely, 2^387075440 is an apocalyptic number.

It is an amenable number.

387075440 is an abundant number, since it is smaller than the sum of its proper divisors (512875144).

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

387075440 is a wasteful number, since it uses less digits than its factorization.

387075440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838456 (or 4838450 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 387075440 is about 19674.2328948297. The cubic root of 387075440 is about 728.7835121943.

The spelling of 387075440 in words is "three hundred eighty-seven million, seventy-five thousand, four hundred forty".