378548447 has 4 divisors (see below), whose sum is σ = 379211976. Its totient is φ = 377884920.

The previous prime is 378548413. The next prime is 378548461. The reversal of 378548447 is 744845873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378548447 - 2¹⁰ = 378547423 is a prime.

It is a super-2 number, since 2×378548447² = 286597853452223618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378548395 and 378548404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378568447) 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, 330908 + ... + 332049.

It is an arithmetic number, because the mean of its divisors is an integer number (94802994).

Almost surely, 2^378548447 is an apocalyptic number.

378548447 is a deficient number, since it is larger than the sum of its proper divisors (663529).

378548447 is an equidigital number, since it uses as much as digits as its factorization.

378548447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663528.

The product of its digits is 3010560, while the sum is 50.

The square root of 378548447 is about 19456.3215176970. The cubic root of 378548447 is about 723.3922021408.

The spelling of 378548447 in words is "three hundred seventy-eight million, five hundred forty-eight thousand, four hundred forty-seven".