39489387 has 32 divisors (see below), whose sum is σ = 63329280. Its totient is φ = 21409920.

The previous prime is 39489377. The next prime is 39489403. The reversal of 39489387 is 78398493.

It is not a de Polignac number, because 39489387 - 2¹⁵ = 39456619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39489347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36618 + ... + 37680.

It is an arithmetic number, because the mean of its divisors is an integer number (1979040).

Almost surely, 2^39489387 is an apocalyptic number.

39489387 is a deficient number, since it is larger than the sum of its proper divisors (23839893).

39489387 is a wasteful number, since it uses less digits than its factorization.

39489387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its digits is 1306368, while the sum is 51.

The square root of 39489387 is about 6284.0581633209. The cubic root of 39489387 is about 340.5337263175.

The spelling of 39489387 in words is "thirty-nine million, four hundred eighty-nine thousand, three hundred eighty-seven".