39490489 has 4 divisors (see below), whose sum is σ = 40852260. Its totient is φ = 38128720.

The previous prime is 39490483. The next prime is 39490511. The reversal of 39490489 is 98409493.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19954089 + 19536400 = 4467^2 + 4420^2 .

It is a cyclic number.

It is not a de Polignac number, because 39490489 - 2⁹ = 39489977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39490483) 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, 680842 + ... + 680899.

It is an arithmetic number, because the mean of its divisors is an integer number (10213065).

Almost surely, 2^39490489 is an apocalyptic number.

It is an amenable number.

39490489 is a deficient number, since it is larger than the sum of its proper divisors (1361771).

39490489 is a wasteful number, since it uses less digits than its factorization.

39490489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361770.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 39490489 is about 6284.1458449021. The cubic root of 39490489 is about 340.5368939591.

The spelling of 39490489 in words is "thirty-nine million, four hundred ninety thousand, four hundred eighty-nine".