381440412 has 18 divisors (see below), whose sum is σ = 964196688. Its totient is φ = 127146792.

The previous prime is 381440387. The next prime is 381440413. The reversal of 381440412 is 214044183.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×381440412³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381440413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5297748 + ... + 5297819.

Almost surely, 2^381440412 is an apocalyptic number.

It is an amenable number.

381440412 is an abundant number, since it is smaller than the sum of its proper divisors (582756276).

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

381440412 is a wasteful number, since it uses less digits than its factorization.

381440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10595577 (or 10595572 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 381440412 is about 19530.4995327821. The cubic root of 381440412 is about 725.2296772116.

Adding to 381440412 its reverse (214044183), we get a palindrome (595484595).

The spelling of 381440412 in words is "three hundred eighty-one million, four hundred forty thousand, four hundred twelve".