381449244 has 48 divisors (see below), whose sum is σ = 1022071680. Its totient is φ = 109506240.

The previous prime is 381449239. The next prime is 381449251. The reversal of 381449244 is 442944183.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73539 + ... + 78554.

It is an arithmetic number, because the mean of its divisors is an integer number (21293160).

Almost surely, 2^381449244 is an apocalyptic number.

It is an amenable number.

381449244 is an abundant number, since it is smaller than the sum of its proper divisors (640622436).

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

381449244 is a wasteful number, since it uses less digits than its factorization.

381449244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152130 (or 152128 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 381449244 is about 19530.7256393612. The cubic root of 381449244 is about 725.2352745727.

The spelling of 381449244 in words is "three hundred eighty-one million, four hundred forty-nine thousand, two hundred forty-four".