380521369 has 8 divisors (see below), whose sum is σ = 394185960. Its totient is φ = 367065600.

The previous prime is 380521367. The next prime is 380521399. The reversal of 380521369 is 963125083.

It can be written as a sum of positive squares in 4 ways, for example, as 4665600 + 375855769 = 2160^2 + 19387^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 380521369 - 2¹ = 380521367 is a prime.

It is a super-2 number, since 2×380521369² = 289593024531268322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380521367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48492 + ... + 55789.

It is an arithmetic number, because the mean of its divisors is an integer number (49273245).

Almost surely, 2^380521369 is an apocalyptic number.

It is an amenable number.

380521369 is a deficient number, since it is larger than the sum of its proper divisors (13664591).

380521369 is a wasteful number, since it uses less digits than its factorization.

380521369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104411.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 380521369 is about 19506.9569384874. The cubic root of 380521369 is about 724.6467523673.

The spelling of 380521369 in words is "three hundred eighty million, five hundred twenty-one thousand, three hundred sixty-nine".