387440238 has 16 divisors (see below), whose sum is σ = 775074816. Its totient is φ = 129114360.

The previous prime is 387440233. The next prime is 387440239. The reversal of 387440238 is 832044783.

It is a junction number, because it is equal to n+sod(n) for n = 387440196 and 387440205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387440233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38073 + ... + 47163.

It is an arithmetic number, because the mean of its divisors is an integer number (48442176).

Almost surely, 2^387440238 is an apocalyptic number.

387440238 is an abundant number, since it is smaller than the sum of its proper divisors (387634578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387440238 is a wasteful number, since it uses less digits than its factorization.

387440238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16199.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 387440238 is about 19683.5016701805. The cubic root of 387440238 is about 729.0123868654.

The spelling of 387440238 in words is "three hundred eighty-seven million, four hundred forty thousand, two hundred thirty-eight".