8335142209 has 3 divisors (see below), whose sum is σ = 8335233507. Its totient is φ = 8335050912.

The previous prime is 8335142203. The next prime is 8335142219. The reversal of 8335142209 is 9022415338.

The square root of 8335142209 is 91297.

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., 4145428225 + 4189713984 = 64385^2 + 64728^2 .

It is not a de Polignac number, because 8335142209 - 2²³ = 8326753601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8335142203) 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, 45649 + ... + 136945.

It is an arithmetic number, because the mean of its divisors is an integer number (2778411169).

Almost surely, 2^8335142209 is an apocalyptic number.

8335142209 is the 91297-th square number.

8335142209 is the 45649-th centered octagonal number.

It is an amenable number.

8335142209 is a deficient number, since it is larger than the sum of its proper divisors (91298).

8335142209 is an frugal number, since it uses more digits than its factorization.

8335142209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182594 (or 91297 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The cubic root of 8335142209 is about 2027.5473472077.

It can be divided in two parts, 8335 and 142209, that added together give a square (150544 = 388²).

The spelling of 8335142209 in words is "eight billion, three hundred thirty-five million, one hundred forty-two thousand, two hundred nine".