378469947 has 4 divisors (see below), whose sum is σ = 504626600. Its totient is φ = 252313296.

The previous prime is 378469943. The next prime is 378469967. The reversal of 378469947 is 749964873.

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

It is not a de Polignac number, because 378469947 - 2² = 378469943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378469943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63078322 + ... + 63078327.

It is an arithmetic number, because the mean of its divisors is an integer number (126156650).

Almost surely, 2^378469947 is an apocalyptic number.

378469947 is a deficient number, since it is larger than the sum of its proper divisors (126156653).

378469947 is a wasteful number, since it uses less digits than its factorization.

378469947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126156652.

The product of its digits is 9144576, while the sum is 57.

The square root of 378469947 is about 19454.3040739061. The cubic root of 378469947 is about 723.3421951434.

The spelling of 378469947 in words is "three hundred seventy-eight million, four hundred sixty-nine thousand, nine hundred forty-seven".