378529 has 4 divisors (see below), whose sum is σ = 387376. Its totient is φ = 369684.

The previous prime is 378523. The next prime is 378533. The reversal of 378529 is 925873.

378529 = 72² + 73² + ... + 114².

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 378529 - 2⁷ = 378401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378494 and 378503.

It is not an unprimeable number, because it can be changed into a prime (378523) 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, 4359 + ... + 4444.

It is an arithmetic number, because the mean of its divisors is an integer number (96844).

2³⁷⁸⁵²⁹ is an apocalyptic number.

It is an amenable number.

378529 is a deficient number, since it is larger than the sum of its proper divisors (8847).

378529 is an equidigital number, since it uses as much as digits as its factorization.

378529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846.

The product of its digits is 15120, while the sum is 34.

The square root of 378529 is about 615.2471048286. The cubic root of 378529 is about 72.3379814427.

The spelling of 378529 in words is "three hundred seventy-eight thousand, five hundred twenty-nine".