378405377 has 4 divisors (see below), whose sum is σ = 432463296. Its totient is φ = 324347460.

The previous prime is 378405343. The next prime is 378405389. The reversal of 378405377 is 773504873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773504873 = 599 ⋅1291327.

It is a cyclic number.

It is not a de Polignac number, because 378405377 - 2¹⁴ = 378388993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378405337) 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, 27028949 + ... + 27028962.

It is an arithmetic number, because the mean of its divisors is an integer number (108115824).

Almost surely, 2^378405377 is an apocalyptic number.

It is an amenable number.

378405377 is a deficient number, since it is larger than the sum of its proper divisors (54057919).

378405377 is an equidigital number, since it uses as much as digits as its factorization.

378405377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54057918.

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 378405377 is about 19452.6444731815. The cubic root of 378405377 is about 723.3010568159.

The spelling of 378405377 in words is "three hundred seventy-eight million, four hundred five thousand, three hundred seventy-seven".