387389487 has 8 divisors (see below), whose sum is σ = 517048704. Its totient is φ = 257994968.

The previous prime is 387389441. The next prime is 387389501. The reversal of 387389487 is 784983783.

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 387389487 - 2¹⁵ = 387356719 is a prime.

It is a super-2 number, since 2×387389487² = 300141229276246338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387389287) 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, 62733 + ... + 68630.

It is an arithmetic number, because the mean of its divisors is an integer number (64631088).

Almost surely, 2^387389487 is an apocalyptic number.

387389487 is a deficient number, since it is larger than the sum of its proper divisors (129659217).

387389487 is a wasteful number, since it uses less digits than its factorization.

387389487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132349.

The product of its digits is 8128512, while the sum is 57.

The square root of 387389487 is about 19682.2124518561. The cubic root of 387389487 is about 728.9805542371.

The spelling of 387389487 in words is "three hundred eighty-seven million, three hundred eighty-nine thousand, four hundred eighty-seven".