378444789 has 12 divisors (see below), whose sum is σ = 548932800. Its totient is φ = 251239464.

The previous prime is 378444767. The next prime is 378444811. The reversal of 378444789 is 987444873.

It is an interprime number because it is at equal distance from previous prime (378444767) and next prime (378444811).

It is not a de Polignac number, because 378444789 - 2¹² = 378440693 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378444709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85819 + ... + 90120.

It is an arithmetic number, because the mean of its divisors is an integer number (45744400).

Almost surely, 2^378444789 is an apocalyptic number.

It is an amenable number.

378444789 is a deficient number, since it is larger than the sum of its proper divisors (170488011).

378444789 is a wasteful number, since it uses less digits than its factorization.

378444789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176184 (or 176181 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 378444789 is about 19453.6574710259. The cubic root of 378444789 is about 723.3261672339.

The spelling of 378444789 in words is "three hundred seventy-eight million, four hundred forty-four thousand, seven hundred eighty-nine".