378971398 has 8 divisors (see below), whose sum is σ = 612184608. Its totient is φ = 174909864.

The previous prime is 378971393. The next prime is 378971419. The reversal of 378971398 is 893179873.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378971393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7287886 + ... + 7287937.

It is an arithmetic number, because the mean of its divisors is an integer number (76523076).

Almost surely, 2^378971398 is an apocalyptic number.

378971398 is a deficient number, since it is larger than the sum of its proper divisors (233213210).

378971398 is a wasteful number, since it uses less digits than its factorization.

378971398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14575838.

The product of its digits is 2286144, while the sum is 55.

The square root of 378971398 is about 19467.1877270447. The cubic root of 378971398 is about 723.6615164820.

The spelling of 378971398 in words is "three hundred seventy-eight million, nine hundred seventy-one thousand, three hundred ninety-eight".