389269999 has 4 divisors (see below), whose sum is σ = 391287136. Its totient is φ = 387252864.

The previous prime is 389269973. The next prime is 389270017. The reversal of 389269999 is 999962983.

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 389269999 - 2¹¹ = 389267951 is a prime.

It is a super-2 number, since 2×389269999² = 303062264242920002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389269999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389269919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008279 + ... + 1008664.

It is an arithmetic number, because the mean of its divisors is an integer number (97821784).

Almost surely, 2^389269999 is an apocalyptic number.

389269999 is a deficient number, since it is larger than the sum of its proper divisors (2017137).

389269999 is a wasteful number, since it uses less digits than its factorization.

389269999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017136.

The product of its digits is 17006112, while the sum is 64.

The square root of 389269999 is about 19729.9264823770. The cubic root of 389269999 is about 730.1582186611.

The spelling of 389269999 in words is "three hundred eighty-nine million, two hundred sixty-nine thousand, nine hundred ninety-nine".