378790999 has 8 divisors (see below), whose sum is σ = 393388160. Its totient is φ = 364457016.

The previous prime is 378790981. The next prime is 378791003. The reversal of 378790999 is 999097873.

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 378790999 - 2⁵ = 378790967 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 (378790499) 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, 62859 + ... + 68620.

It is an arithmetic number, because the mean of its divisors is an integer number (49173520).

Almost surely, 2^378790999 is an apocalyptic number.

378790999 is a deficient number, since it is larger than the sum of its proper divisors (14597161).

378790999 is a wasteful number, since it uses less digits than its factorization.

378790999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131589.

The product of its (nonzero) digits is 7715736, while the sum is 61.

The square root of 378790999 is about 19462.5537635738. The cubic root of 378790999 is about 723.5466718133.

The spelling of 378790999 in words is "three hundred seventy-eight million, seven hundred ninety thousand, nine hundred ninety-nine".