389877770 has 8 divisors (see below), whose sum is σ = 701780004. Its totient is φ = 155951104.

The previous prime is 389877727. The next prime is 389877797. The reversal of 389877770 is 77778983.

It can be written as a sum of positive squares in 2 ways, for example, as 344139601 + 45738169 = 18551^2 + 6763^2 .

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, 19493879 + ... + 19493898.

Almost surely, 2^389877770 is an apocalyptic number.

389877770 is a deficient number, since it is larger than the sum of its proper divisors (311902234).

389877770 is a wasteful number, since it uses less digits than its factorization.

389877770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987784.

The product of its (nonzero) digits is 4148928, while the sum is 56.

The square root of 389877770 is about 19745.3227372965. The cubic root of 389877770 is about 730.5380220866.

The spelling of 389877770 in words is "three hundred eighty-nine million, eight hundred seventy-seven thousand, seven hundred seventy".