378799199 has 4 divisors (see below), whose sum is σ = 391018560. Its totient is φ = 366579840.

The previous prime is 378799177. The next prime is 378799231. The reversal of 378799199 is 991997873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991997873 = 53 ⋅18716941.

It is a cyclic number.

It is not a de Polignac number, because 378799199 - 2⁸ = 378798943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378799139) 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, 6109634 + ... + 6109695.

It is an arithmetic number, because the mean of its divisors is an integer number (97754640).

Almost surely, 2^378799199 is an apocalyptic number.

378799199 is a deficient number, since it is larger than the sum of its proper divisors (12219361).

378799199 is a wasteful number, since it uses less digits than its factorization.

378799199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12219360.

The product of its digits is 7715736, while the sum is 62.

The square root of 378799199 is about 19462.7644233804. The cubic root of 378799199 is about 723.5518928454.

The spelling of 378799199 in words is "three hundred seventy-eight million, seven hundred ninety-nine thousand, one hundred ninety-nine".