387420487 has 8 divisors (see below), whose sum is σ = 404463456. Its totient is φ = 370394112.

The previous prime is 387420479. The next prime is 387420499. The reversal of 387420487 is 784024783.

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

It is a cyclic number.

It is not a de Polignac number, because 387420487 - 2³ = 387420479 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 3 and base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387420457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80863 + ... + 85519.

It is an arithmetic number, because the mean of its divisors is an integer number (50557932).

Almost surely, 2^387420487 is an apocalyptic number.

387420487 is a deficient number, since it is larger than the sum of its proper divisors (17042969).

387420487 is a wasteful number, since it uses less digits than its factorization.

387420487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 387420487 is about 19682.9999491947. Note that the first 4 decimals coincide. The cubic root of 387420487 is about 728.9999987455. Note that the first 5 decimals are identical.

The spelling of 387420487 in words is "three hundred eighty-seven million, four hundred twenty thousand, four hundred eighty-seven".