389215901 has 8 divisors (see below), whose sum is σ = 412547904. Its totient is φ = 365932480.

The previous prime is 389215889. The next prime is 389215909. The reversal of 389215901 is 109512983.

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

It is not a de Polignac number, because 389215901 - 2⁶ = 389215837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389215909) 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, 5066 + ... + 28356.

It is an arithmetic number, because the mean of its divisors is an integer number (51568488).

Almost surely, 2^389215901 is an apocalyptic number.

It is an amenable number.

389215901 is a deficient number, since it is larger than the sum of its proper divisors (23332003).

389215901 is a wasteful number, since it uses less digits than its factorization.

389215901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24291.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 389215901 is about 19728.5554717014. Note that the first 3 decimals coincide. The cubic root of 389215901 is about 730.1243930136.

The spelling of 389215901 in words is "three hundred eighty-nine million, two hundred fifteen thousand, nine hundred one".