389449951 has 4 divisors (see below), whose sum is σ = 424854504. Its totient is φ = 354045400.

The previous prime is 389449927. The next prime is 389449969. The reversal of 389449951 is 159944983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389449951 - 2⁵ = 389449919 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 (389449051) 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, 17702260 + ... + 17702281.

It is an arithmetic number, because the mean of its divisors is an integer number (106213626).

Almost surely, 2^389449951 is an apocalyptic number.

389449951 is a deficient number, since it is larger than the sum of its proper divisors (35404553).

389449951 is a wasteful number, since it uses less digits than its factorization.

389449951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35404552.

The product of its digits is 1399680, while the sum is 52.

The square root of 389449951 is about 19734.4863373740. The cubic root of 389449951 is about 730.2707140074.

The spelling of 389449951 in words is "three hundred eighty-nine million, four hundred forty-nine thousand, nine hundred fifty-one".