380989133 has 4 divisors (see below), whose sum is σ = 435416160. Its totient is φ = 326562108.

The previous prime is 380989129. The next prime is 380989171. The reversal of 380989133 is 331989083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 380989133 - 2² = 380989129 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 (380989123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27213503 + ... + 27213516.

It is an arithmetic number, because the mean of its divisors is an integer number (108854040).

Almost surely, 2^380989133 is an apocalyptic number.

It is an amenable number.

380989133 is a deficient number, since it is larger than the sum of its proper divisors (54427027).

380989133 is an equidigital number, since it uses as much as digits as its factorization.

380989133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54427026.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 380989133 is about 19518.9429273206. The cubic root of 380989133 is about 724.9435599345.

Subtracting from 380989133 its reverse (331989083), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 380989133 in words is "three hundred eighty million, nine hundred eighty-nine thousand, one hundred thirty-three".