39889465 has 24 divisors (see below), whose sum is σ = 60137280. Its totient is φ = 24863520.

The previous prime is 39889459. The next prime is 39889469. The reversal of 39889465 is 56498893.

It is a happy number.

It is not a de Polignac number, because 39889465 - 2³ = 39889457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39889469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475 + ... + 8944.

It is an arithmetic number, because the mean of its divisors is an integer number (2505720).

Almost surely, 2^39889465 is an apocalyptic number.

39889465 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39889465 is a deficient number, since it is larger than the sum of its proper divisors (20247815).

39889465 is a wasteful number, since it uses less digits than its factorization.

39889465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453 (or 9442 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 39889465 is about 6315.8107159730. The cubic root of 39889465 is about 341.6798783972.

The spelling of 39889465 in words is "thirty-nine million, eight hundred eighty-nine thousand, four hundred sixty-five".