378710999 has 4 divisors (see below), whose sum is σ = 378863160. Its totient is φ = 378558840.

The previous prime is 378710987. The next prime is 378711043. The reversal of 378710999 is 999017873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378710999 is a prime.

It is a super-4 number, since 4×378710999⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378710999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378710909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72284 + ... + 77345.

It is an arithmetic number, because the mean of its divisors is an integer number (94715790).

Almost surely, 2^378710999 is an apocalyptic number.

378710999 is a deficient number, since it is larger than the sum of its proper divisors (152161).

378710999 is a wasteful number, since it uses less digits than its factorization.

378710999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152160.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 378710999 is about 19460.4984262994. The cubic root of 378710999 is about 723.4957309608.

The spelling of 378710999 in words is "three hundred seventy-eight million, seven hundred ten thousand, nine hundred ninety-nine".