378867449 has 4 divisors (see below), whose sum is σ = 378917364. Its totient is φ = 378817536.

The previous prime is 378867427. The next prime is 378867451. The reversal of 378867449 is 944768873.

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

It can be written as a sum of positive squares in 2 ways, for example, as 310887424 + 67980025 = 17632^2 + 8245^2 .

It is a cyclic number.

It is not a de Polignac number, because 378867449 - 2⁸ = 378867193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378867394 and 378867403.

It is not an unprimeable number, because it can be changed into a prime (378867149) 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, 10952 + ... + 29625.

It is an arithmetic number, because the mean of its divisors is an integer number (94729341).

Almost surely, 2^378867449 is an apocalyptic number.

It is an amenable number.

378867449 is a deficient number, since it is larger than the sum of its proper divisors (49915).

378867449 is an equidigital number, since it uses as much as digits as its factorization.

378867449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49914.

The product of its digits is 8128512, while the sum is 56.

The square root of 378867449 is about 19464.5176924577. The cubic root of 378867449 is about 723.5953454638.

The spelling of 378867449 in words is "three hundred seventy-eight million, eight hundred sixty-seven thousand, four hundred forty-nine".