39809028484 has 9 divisors (see below), whose sum is σ = 69666498181. Its totient is φ = 19904314720.

The previous prime is 39809028481. The next prime is 39809028499. The reversal of 39809028484 is 48482090893.

The square root of 39809028484 is 199522.

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

It can be written as a sum of positive squares in only one way, i.e., 3921514884 + 35887513600 = 62622^2 + 189440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39809028481) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 349164 + ... + 448924.

Almost surely, 2^39809028484 is an apocalyptic number.

39809028484 is the 199522-nd square number.

It is an amenable number.

39809028484 is a deficient number, since it is larger than the sum of its proper divisors (29857469697).

39809028484 is an frugal number, since it uses more digits than its factorization.

39809028484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199526 (or 99763 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 39809028484 in words is "thirty-nine billion, eight hundred nine million, twenty-eight thousand, four hundred eighty-four".