389690109 has 12 divisors (see below), whose sum is σ = 583733696. Its totient is φ = 259793244.

The previous prime is 389690101. The next prime is 389690111. The reversal of 389690109 is 901096983.

It is not a de Polignac number, because 389690109 - 2³ = 389690101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389690101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801589 + ... + 802074.

Almost surely, 2^389690109 is an apocalyptic number.

It is an amenable number.

389690109 is a deficient number, since it is larger than the sum of its proper divisors (194043587).

389690109 is an equidigital number, since it uses as much as digits as its factorization.

389690109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603678 (or 1603666 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 389690109 is about 19740.5701285449. The cubic root of 389690109 is about 730.4207926128.

The spelling of 389690109 in words is "three hundred eighty-nine million, six hundred ninety thousand, one hundred nine".