387258987 has 8 divisors (see below), whose sum is σ = 517264704. Its totient is φ = 257712968.

The previous prime is 387258961. The next prime is 387259009. The reversal of 387258987 is 789852783.

It is a happy number.

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 387258987 - 2¹² = 387254891 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (387250987) 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, 112953 + ... + 116330.

It is an arithmetic number, because the mean of its divisors is an integer number (64658088).

Almost surely, 2^387258987 is an apocalyptic number.

387258987 is a deficient number, since it is larger than the sum of its proper divisors (130005717).

387258987 is a wasteful number, since it uses less digits than its factorization.

387258987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229849.

The product of its digits is 6773760, while the sum is 57.

The square root of 387258987 is about 19678.8969965290. The cubic root of 387258987 is about 728.8986877523.

The spelling of 387258987 in words is "three hundred eighty-seven million, two hundred fifty-eight thousand, nine hundred eighty-seven".