378909873 has 8 divisors (see below), whose sum is σ = 561348000. Its totient is φ = 252606564.

The previous prime is 378909871. The next prime is 378909877.

378909873 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 378909873 - 2¹ = 378909871 is a prime.

It is a super-3 number, since 3×378909873³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (378909871) 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, 7016823 + ... + 7016876.

It is an arithmetic number, because the mean of its divisors is an integer number (70168500).

Almost surely, 2^378909873 is an apocalyptic number.

It is an amenable number.

378909873 is a deficient number, since it is larger than the sum of its proper divisors (182438127).

378909873 is a wasteful number, since it uses less digits than its factorization.

378909873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033708 (or 14033702 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 378909873 is about 19465.6074397898. The cubic root of 378909873 is about 723.6223528541.

The spelling of 378909873 in words is "three hundred seventy-eight million, nine hundred nine thousand, eight hundred seventy-three".