381299972 has 12 divisors (see below), whose sum is σ = 667417296. Its totient is φ = 190609320.

The previous prime is 381299921. The next prime is 381299977. The reversal of 381299972 is 279992183.

381299972 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

381299972 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381299972.

It is not an unprimeable number, because it can be changed into a prime (381299977) 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 3 ways as a sum of consecutive naturals, for example, 22823 + ... + 35825.

It is an arithmetic number, because the mean of its divisors is an integer number (55618108).

Almost surely, 2^381299972 is an apocalyptic number.

It is an amenable number.

381299972 is a deficient number, since it is larger than the sum of its proper divisors (286117324).

381299972 is a wasteful number, since it uses less digits than its factorization.

381299972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20338 (or 20336 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 381299972 is about 19526.9037996299. The cubic root of 381299972 is about 725.1406604608.

The spelling of 381299972 in words is "three hundred eighty-one million, two hundred ninety-nine thousand, nine hundred seventy-two".