378440941 has 4 divisors (see below), whose sum is σ = 382342492. Its totient is φ = 374539392.

The previous prime is 378440939. The next prime is 378440971. The reversal of 378440941 is 149044873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149044873 = 19 ⋅7844467.

It can be written as a sum of positive squares in 2 ways, for example, as 59675625 + 318765316 = 7725^2 + 17854^2 .

It is a cyclic number.

It is not a de Polignac number, because 378440941 - 2¹ = 378440939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378440894 and 378440903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378440971) 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, 1950630 + ... + 1950823.

It is an arithmetic number, because the mean of its divisors is an integer number (95585623).

Almost surely, 2^378440941 is an apocalyptic number.

It is an amenable number.

378440941 is a deficient number, since it is larger than the sum of its proper divisors (3901551).

378440941 is an equidigital number, since it uses as much as digits as its factorization.

378440941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901550.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 378440941 is about 19453.5585690639. The cubic root of 378440941 is about 723.3237156491.

The spelling of 378440941 in words is "three hundred seventy-eight million, four hundred forty thousand, nine hundred forty-one".