39408999289 has 9 divisors (see below), whose sum is σ = 43319730181. Its totient is φ = 35824377820.

The previous prime is 39408999277. The next prime is 39408999299. The reversal of 39408999289 is 98299980493.

The square root of 39408999289 is 198517.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 39408999289 - 2⁵ = 39408999257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39408999239) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2174664 + ... + 2192710.

Almost surely, 2^39408999289 is an apocalyptic number.

39408999289 is the 198517-th square number.

39408999289 is the 99259-th centered octagonal number.

It is an amenable number.

39408999289 is a deficient number, since it is larger than the sum of its proper divisors (3910730892).

39408999289 is an frugal number, since it uses more digits than its factorization.

39408999289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36116 (or 18058 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 70.

The spelling of 39408999289 in words is "thirty-nine billion, four hundred eight million, nine hundred ninety-nine thousand, two hundred eighty-nine".