378977434 has 16 divisors (see below), whose sum is σ = 620571456. Its totient is φ = 172144000.

The previous prime is 378977429. The next prime is 378977437. The reversal of 378977434 is 434779873.

It is not an unprimeable number, because it can be changed into a prime (378977437) 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, 32259 + ... + 42409.

It is an arithmetic number, because the mean of its divisors is an integer number (38785716).

Almost surely, 2^378977434 is an apocalyptic number.

378977434 is a deficient number, since it is larger than the sum of its proper divisors (241594022).

378977434 is a wasteful number, since it uses less digits than its factorization.

378977434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861.

The product of its digits is 3556224, while the sum is 52.

The square root of 378977434 is about 19467.3427565243. The cubic root of 378977434 is about 723.6653584586.

The spelling of 378977434 in words is "three hundred seventy-eight million, nine hundred seventy-seven thousand, four hundred thirty-four".