388977794 has 8 divisors (see below), whose sum is σ = 608834880. Its totient is φ = 186032836.

The previous prime is 388977779. The next prime is 388977829. The reversal of 388977794 is 497779883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4227974 + ... + 4228065.

It is an arithmetic number, because the mean of its divisors is an integer number (76104360).

Almost surely, 2^388977794 is an apocalyptic number.

388977794 is a deficient number, since it is larger than the sum of its proper divisors (219857086).

388977794 is a wasteful number, since it uses less digits than its factorization.

388977794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456064.

The product of its digits is 21337344, while the sum is 62.

The square root of 388977794 is about 19722.5199708354. The cubic root of 388977794 is about 729.9754755006.

The spelling of 388977794 in words is "three hundred eighty-eight million, nine hundred seventy-seven thousand, seven hundred ninety-four".