380909129 has 4 divisors (see below), whose sum is σ = 381818640. Its totient is φ = 379999620.

The previous prime is 380909119. The next prime is 380909143. The reversal of 380909129 is 921909083.

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 380909129 - 2²⁴ = 364131913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380909119) 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, 454127 + ... + 454964.

It is an arithmetic number, because the mean of its divisors is an integer number (95454660).

Almost surely, 2^380909129 is an apocalyptic number.

It is an amenable number.

380909129 is a deficient number, since it is larger than the sum of its proper divisors (909511).

380909129 is an equidigital number, since it uses as much as digits as its factorization.

380909129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909510.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 380909129 is about 19516.8934259528. The cubic root of 380909129 is about 724.8928126912.

The spelling of 380909129 in words is "three hundred eighty million, nine hundred nine thousand, one hundred twenty-nine".