389952985 has 8 divisors (see below), whose sum is σ = 468961416. Its totient is φ = 311283840.

The previous prime is 389952977. The next prime is 389953033. The reversal of 389952985 is 589259983.

It can be written as a sum of positive squares in 4 ways, for example, as 118461456 + 271491529 = 10884^2 + 16477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389952985 - 2³ = 389952977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82284 + ... + 86893.

It is an arithmetic number, because the mean of its divisors is an integer number (58620177).

Almost surely, 2^389952985 is an apocalyptic number.

It is an amenable number.

389952985 is a deficient number, since it is larger than the sum of its proper divisors (79008431).

389952985 is a wasteful number, since it uses less digits than its factorization.

389952985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169643.

The product of its digits is 6998400, while the sum is 58.

The square root of 389952985 is about 19747.2272737212. The cubic root of 389952985 is about 730.5849973940.

The spelling of 389952985 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, nine hundred eighty-five".