378779401 has 16 divisors (see below), whose sum is σ = 508572288. Its totient is φ = 272448000.

The previous prime is 378779377. The next prime is 378779413. The reversal of 378779401 is 104977873.

It is not a de Polignac number, because 378779401 - 2¹⁷ = 378648329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378779441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188200 + ... + 190201.

It is an arithmetic number, because the mean of its divisors is an integer number (31785768).

Almost surely, 2^378779401 is an apocalyptic number.

It is an amenable number.

378779401 is a deficient number, since it is larger than the sum of its proper divisors (129792887).

378779401 is a wasteful number, since it uses less digits than its factorization.

378779401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378432.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 378779401 is about 19462.2558045053. The cubic root of 378779401 is about 723.5392871077.

It can be divided in two parts, 37877 and 9401, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 378779401 in words is "three hundred seventy-eight million, seven hundred seventy-nine thousand, four hundred one".