378328829 has 8 divisors (see below), whose sum is σ = 402662520. Its totient is φ = 354226176.

The previous prime is 378328807. The next prime is 378328837. The reversal of 378328829 is 928823873.

It can be written as a sum of positive squares in 4 ways, for example, as 12945604 + 365383225 = 3598^2 + 19115^2 .

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 378328829 - 2¹² = 378324733 is a prime.

It is a super-2 number, since 2×378328829² = 286265405705022482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378328849) 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, 54374 + ... + 60935.

It is an arithmetic number, because the mean of its divisors is an integer number (50332815).

Almost surely, 2^378328829 is an apocalyptic number.

It is an amenable number.

378328829 is a deficient number, since it is larger than the sum of its proper divisors (24333691).

378328829 is a wasteful number, since it uses less digits than its factorization.

378328829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115519.

The product of its digits is 1161216, while the sum is 50.

The square root of 378328829 is about 19450.6768262701. The cubic root of 378328829 is about 723.2522810968.

The spelling of 378328829 in words is "three hundred seventy-eight million, three hundred twenty-eight thousand, eight hundred twenty-nine".