378396399 has 8 divisors (see below), whose sum is σ = 509524272. Its totient is φ = 249766400.

The previous prime is 378396397. The next prime is 378396407. The reversal of 378396399 is 993693873.

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

It is a cyclic number.

It is not a de Polignac number, because 378396399 - 2¹ = 378396397 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378396397) 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, 624114 + ... + 624719.

It is an arithmetic number, because the mean of its divisors is an integer number (63690534).

Almost surely, 2^378396399 is an apocalyptic number.

378396399 is a deficient number, since it is larger than the sum of its proper divisors (131127873).

378396399 is a wasteful number, since it uses less digits than its factorization.

378396399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248937.

The product of its digits is 6613488, while the sum is 57.

The square root of 378396399 is about 19452.4137062731. The cubic root of 378396399 is about 723.2953364530.

The spelling of 378396399 in words is "three hundred seventy-eight million, three hundred ninety-six thousand, three hundred ninety-nine".