379847999 has 4 divisors (see below), whose sum is σ = 380015664. Its totient is φ = 379680336.

The previous prime is 379847933. The next prime is 379848011. The reversal of 379847999 is 999748973.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999748973 = 19 ⋅52618367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-379847999 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 (379847399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80387 + ... + 84980.

It is an arithmetic number, because the mean of its divisors is an integer number (95003916).

Almost surely, 2^379847999 is an apocalyptic number.

379847999 is a deficient number, since it is larger than the sum of its proper divisors (167665).

379847999 is a wasteful number, since it uses less digits than its factorization.

379847999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167664.

The product of its digits is 30862944, while the sum is 65.

The square root of 379847999 is about 19489.6895562756. The cubic root of 379847999 is about 724.2190554098.

The spelling of 379847999 in words is "three hundred seventy-nine million, eight hundred forty-seven thousand, nine hundred ninety-nine".