381417009 has 16 divisors (see below), whose sum is σ = 521002944. Its totient is φ = 248068800.

The previous prime is 381416989. The next prime is 381417011. The reversal of 381417009 is 900714183.

It is not a de Polignac number, because 381417009 - 2⁸ = 381416753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381417059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177079 + ... + 179219.

It is an arithmetic number, because the mean of its divisors is an integer number (32562684).

Almost surely, 2^381417009 is an apocalyptic number.

It is an amenable number.

381417009 is a deficient number, since it is larger than the sum of its proper divisors (139585935).

381417009 is a wasteful number, since it uses less digits than its factorization.

381417009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 381417009 is about 19529.9003837705. The cubic root of 381417009 is about 725.2148449279.

It can be divided in two parts, 38141 and 7009, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 381417009 in words is "three hundred eighty-one million, four hundred seventeen thousand, nine".