378904971 has 8 divisors (see below), whose sum is σ = 521503744. Its totient is φ = 244454760.

The previous prime is 378904969. The next prime is 378904979. The reversal of 378904971 is 179409873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378904971 - 2¹ = 378904969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378904971.

It is not an unprimeable number, because it can be changed into a prime (378904979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037031 + ... + 2037216.

It is an arithmetic number, because the mean of its divisors is an integer number (65187968).

Almost surely, 2^378904971 is an apocalyptic number.

378904971 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

378904971 is a deficient number, since it is larger than the sum of its proper divisors (142598773).

378904971 is a wasteful number, since it uses less digits than its factorization.

378904971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074281.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 378904971 is about 19465.4815249970. The cubic root of 378904971 is about 723.6192323125.

The spelling of 378904971 in words is "three hundred seventy-eight million, nine hundred four thousand, nine hundred seventy-one".