389952919 has 4 divisors (see below), whose sum is σ = 412891344. Its totient is φ = 367014496.

The previous prime is 389952907. The next prime is 389952923. The reversal of 389952919 is 919259983.

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

It is not a de Polignac number, because 389952919 - 2¹⁵ = 389920151 is a prime.

It is a super-2 number, since 2×389952919² = 304126558073241122, 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 389952919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389952929) 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, 11469187 + ... + 11469220.

It is an arithmetic number, because the mean of its divisors is an integer number (103222836).

Almost surely, 2^389952919 is an apocalyptic number.

389952919 is a deficient number, since it is larger than the sum of its proper divisors (22938425).

389952919 is a wasteful number, since it uses less digits than its factorization.

389952919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22938424.

The product of its digits is 1574640, while the sum is 55.

The square root of 389952919 is about 19747.2256026005. The cubic root of 389952919 is about 730.5849561765.

It can be divided in two parts, 38995 and 2919, that added together give a palindrome (41914).

The spelling of 389952919 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, nine hundred nineteen".