378904699 has 4 divisors (see below), whose sum is σ = 380272864. Its totient is φ = 377536536.

The previous prime is 378904693. The next prime is 378904703. The reversal of 378904699 is 996409873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996409873 = 8627 ⋅115499.

It is a cyclic number.

It is not a de Polignac number, because 378904699 - 2¹⁹ = 378380411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378904693) 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, 683667 + ... + 684220.

It is an arithmetic number, because the mean of its divisors is an integer number (95068216).

Almost surely, 2^378904699 is an apocalyptic number.

378904699 is a deficient number, since it is larger than the sum of its proper divisors (1368165).

378904699 is a wasteful number, since it uses less digits than its factorization.

378904699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368164.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 378904699 is about 19465.4745382690. The cubic root of 378904699 is about 723.6190591605.

The spelling of 378904699 in words is "three hundred seventy-eight million, nine hundred four thousand, six hundred ninety-nine".