88304659921 has 3 divisors (see below), whose sum is σ = 88304957083. Its totient is φ = 88304362760.

The previous prime is 88304659841. The next prime is 88304659987. The reversal of 88304659921 is 12995640388.

The square root of 88304659921 is 297161.

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., 86854573521 + 1450086400 = 294711^2 + 38080^2 .

It is not a de Polignac number, because 88304659921 - 2²¹ = 88302562769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88304639921) 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, 148581 + ... + 445741.

Almost surely, 2^88304659921 is an apocalyptic number.

88304659921 is the 297161-st square number.

88304659921 is the 148581-st centered octagonal number.

It is an amenable number.

88304659921 is a deficient number, since it is larger than the sum of its proper divisors (297162).

88304659921 is an frugal number, since it uses more digits than its factorization.

88304659921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594322 (or 297161 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

It can be divided in two parts, 88304 and 659921, that added together give a square (748225 = 865²).

The spelling of 88304659921 in words is "eighty-eight billion, three hundred four million, six hundred fifty-nine thousand, nine hundred twenty-one".