389245999 has 4 divisors (see below), whose sum is σ = 389364840. Its totient is φ = 389127160.

The previous prime is 389245993. The next prime is 389246003. The reversal of 389245999 is 999542983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999542983 = 467 ⋅2140349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389245999 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 (389245993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54364 + ... + 61105.

It is an arithmetic number, because the mean of its divisors is an integer number (97341210).

Almost surely, 2^389245999 is an apocalyptic number.

389245999 is a deficient number, since it is larger than the sum of its proper divisors (118841).

389245999 is a wasteful number, since it uses less digits than its factorization.

389245999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118840.

The product of its digits is 6298560, while the sum is 58.

The square root of 389245999 is about 19729.3182598893. The cubic root of 389245999 is about 730.1432126606.

The spelling of 389245999 in words is "three hundred eighty-nine million, two hundred forty-five thousand, nine hundred ninety-nine".