378463321 has 4 divisors (see below), whose sum is σ = 394918272. Its totient is φ = 362008372.

The previous prime is 378463289. The next prime is 378463357. The reversal of 378463321 is 123364873.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123364873 = 11083 ⋅11131.

It is a cyclic number.

It is not a de Polignac number, because 378463321 - 2⁵ = 378463289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378463361) 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, 8227441 + ... + 8227486.

It is an arithmetic number, because the mean of its divisors is an integer number (98729568).

Almost surely, 2^378463321 is an apocalyptic number.

It is an amenable number.

378463321 is a deficient number, since it is larger than the sum of its proper divisors (16454951).

378463321 is a wasteful number, since it uses less digits than its factorization.

378463321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16454950.

The product of its digits is 72576, while the sum is 37.

The square root of 378463321 is about 19454.1337766553. The cubic root of 378463321 is about 723.3379738542.

The spelling of 378463321 in words is "three hundred seventy-eight million, four hundred sixty-three thousand, three hundred twenty-one".