378693899 has 8 divisors (see below), whose sum is σ = 387310080. Its totient is φ = 370101096.

The previous prime is 378693881. The next prime is 378693929. The reversal of 378693899 is 998396873.

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 378693899 - 2²⁸ = 110258443 is a prime.

It is a super-4 number, since 4×378693899⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (378693859) 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 7 ways as a sum of consecutive naturals, for example, 29282 + ... + 40184.

It is an arithmetic number, because the mean of its divisors is an integer number (48413760).

Almost surely, 2^378693899 is an apocalyptic number.

378693899 is a deficient number, since it is larger than the sum of its proper divisors (8616181).

378693899 is a wasteful number, since it uses less digits than its factorization.

378693899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11689.

The product of its digits is 17635968, while the sum is 62.

The square root of 378693899 is about 19460.0590697973. The cubic root of 378693899 is about 723.4848414230.

The spelling of 378693899 in words is "three hundred seventy-eight million, six hundred ninety-three thousand, eight hundred ninety-nine".