389886999 has 8 divisors (see below), whose sum is σ = 532528752. Its totient is φ = 253584960.

The previous prime is 389886997. The next prime is 389887037. The reversal of 389886999 is 999688983.

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

It is not a de Polignac number, because 389886999 - 2¹ = 389886997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389886997) 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, 1584784 + ... + 1585029.

It is an arithmetic number, because the mean of its divisors is an integer number (66566094).

Almost surely, 2^389886999 is an apocalyptic number.

389886999 is a deficient number, since it is larger than the sum of its proper divisors (142641753).

389886999 is a wasteful number, since it uses less digits than its factorization.

389886999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169857.

The product of its digits is 60466176, while the sum is 69.

The square root of 389886999 is about 19745.5564368290. The cubic root of 389886999 is about 730.5437863566.

The spelling of 389886999 in words is "three hundred eighty-nine million, eight hundred eighty-six thousand, nine hundred ninety-nine".