387047825 has 12 divisors (see below), whose sum is σ = 486516108. Its totient is φ = 305395200.

The previous prime is 387047813. The next prime is 387047873. The reversal of 387047825 is 528740783.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 79852096 + 307195729 = 8936^2 + 17527^2 .

It is not a de Polignac number, because 387047825 - 2⁴ = 387047809 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 104216 + ... + 107865.

It is an arithmetic number, because the mean of its divisors is an integer number (40543009).

Almost surely, 2^387047825 is an apocalyptic number.

It is an amenable number.

387047825 is a deficient number, since it is larger than the sum of its proper divisors (99468283).

387047825 is a wasteful number, since it uses less digits than its factorization.

387047825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212164 (or 212159 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 387047825 is about 19673.5310760422. The cubic root of 387047825 is about 728.7661806587.

The spelling of 387047825 in words is "three hundred eighty-seven million, forty-seven thousand, eight hundred twenty-five".