8526490921 has 9 divisors (see below), whose sum is σ = 9234127479. Its totient is φ = 7869498936.

The previous prime is 8526490859. The next prime is 8526490943. The reversal of 8526490921 is 1290946258.

The square root of 8526490921 is 92339.

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., 1261315225 + 7265175696 = 35515^2 + 85236^2 .

It is not a de Polignac number, because 8526490921 - 2¹³ = 8526482729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8526490991) 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, 1196856 + ... + 1203958.

Almost surely, 2^8526490921 is an apocalyptic number.

8526490921 is the 92339-th square number.

8526490921 is the 46170-th centered octagonal number.

It is an amenable number.

8526490921 is a deficient number, since it is larger than the sum of its proper divisors (707636558).

8526490921 is an frugal number, since it uses more digits than its factorization.

8526490921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14232 (or 7116 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The cubic root of 8526490921 is about 2042.9454856326.

The spelling of 8526490921 in words is "eight billion, five hundred twenty-six million, four hundred ninety thousand, nine hundred twenty-one".