387029287 has 4 divisors (see below), whose sum is σ = 397489576. Its totient is φ = 376569000.

The previous prime is 387029263. The next prime is 387029311. The reversal of 387029287 is 782920783.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (387029263) and next prime (387029311).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387029287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387029207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5230089 + ... + 5230162.

It is an arithmetic number, because the mean of its divisors is an integer number (99372394).

Almost surely, 2^387029287 is an apocalyptic number.

387029287 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

387029287 is a deficient number, since it is larger than the sum of its proper divisors (10460289).

387029287 is a wasteful number, since it uses less digits than its factorization.

387029287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10460288.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 387029287 is about 19673.0599297618. The cubic root of 387029287 is about 728.7545455047.

The spelling of 387029287 in words is "three hundred eighty-seven million, twenty-nine thousand, two hundred eighty-seven".