39704946121 has 3 divisors (see below), whose sum is σ = 39705145383. Its totient is φ = 39704746860.

The previous prime is 39704946091. The next prime is 39704946293. The reversal of 39704946121 is 12164940793.

The square root of 39704946121 is 199261.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 143736121 + 39561210000 = 11989^2 + 198900^2 .

It is not a de Polignac number, because 39704946121 - 2⁷ = 39704945993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39714946121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 99631 + ... + 298891.

It is an arithmetic number, because the mean of its divisors is an integer number (13235048461).

Almost surely, 2^39704946121 is an apocalyptic number.

39704946121 is the 199261-st square number.

39704946121 is the 99631-st centered octagonal number.

It is an amenable number.

39704946121 is a deficient number, since it is larger than the sum of its proper divisors (199262).

39704946121 is an frugal number, since it uses more digits than its factorization.

39704946121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398522 (or 199261 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 39704946121 in words is "thirty-nine billion, seven hundred four million, nine hundred forty-six thousand, one hundred twenty-one".