387121383 has 16 divisors (see below), whose sum is σ = 625651200. Its totient is φ = 234618840.

The previous prime is 387121369. The next prime is 387121387. The reversal of 387121383 is 383121783.

It is not a de Polignac number, because 387121383 - 2⁴ = 387121367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387121387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651423 + ... + 652016.

It is an arithmetic number, because the mean of its divisors is an integer number (39103200).

Almost surely, 2^387121383 is an apocalyptic number.

387121383 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

387121383 is a deficient number, since it is larger than the sum of its proper divisors (238529817).

387121383 is a wasteful number, since it uses less digits than its factorization.

387121383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303459 (or 1303453 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 387121383 is about 19675.4004533580. The cubic root of 387121383 is about 728.8123447962.

The spelling of 387121383 in words is "three hundred eighty-seven million, one hundred twenty-one thousand, three hundred eighty-three".