389212907 has 4 divisors (see below), whose sum is σ = 389641056. Its totient is φ = 388784760.

The previous prime is 389212903. The next prime is 389212933. The reversal of 389212907 is 709212983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709212983 = 1009 ⋅702887.

It is a cyclic number.

It is not a de Polignac number, because 389212907 - 2² = 389212903 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389212903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212708 + ... + 214529.

It is an arithmetic number, because the mean of its divisors is an integer number (97410264).

Almost surely, 2^389212907 is an apocalyptic number.

389212907 is a deficient number, since it is larger than the sum of its proper divisors (428149).

389212907 is an equidigital number, since it uses as much as digits as its factorization.

389212907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428148.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 389212907 is about 19728.4795916969. The cubic root of 389212907 is about 730.1225208753.

The spelling of 389212907 in words is "three hundred eighty-nine million, two hundred twelve thousand, nine hundred seven".