381228879 has 8 divisors (see below), whose sum is σ = 508439680. Its totient is φ = 254085336.

The previous prime is 381228851. The next prime is 381228923. The reversal of 381228879 is 978822183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381228879 - 2¹⁹ = 380704591 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 (381228839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627 + ... + 27660.

It is an arithmetic number, because the mean of its divisors is an integer number (63554960).

Almost surely, 2^381228879 is an apocalyptic number.

381228879 is a deficient number, since it is larger than the sum of its proper divisors (127210801).

381228879 is a wasteful number, since it uses less digits than its factorization.

381228879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33629.

The product of its digits is 387072, while the sum is 48.

The square root of 381228879 is about 19525.0833288875. The cubic root of 381228879 is about 725.0955904082.

The spelling of 381228879 in words is "three hundred eighty-one million, two hundred twenty-eight thousand, eight hundred seventy-nine".