88490185729 has 9 divisors (see below), whose sum is σ = 97269668769. Its totient is φ = 80442648660.

The previous prime is 88490185727. The next prime is 88490185739. The reversal of 88490185729 is 92758109488.

The square root of 88490185729 is 297473.

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

It is not a de Polignac number, because 88490185729 - 2¹ = 88490185727 is a prime.

It is a super-2 number, since 2×88490185729² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88490185727) 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, 3258682 + ... + 3285724.

Almost surely, 2^88490185729 is an apocalyptic number.

88490185729 is the 297473-rd square number.

88490185729 is the 148737-th centered octagonal number.

It is an amenable number.

88490185729 is a deficient number, since it is larger than the sum of its proper divisors (8779483040).

88490185729 is an frugal number, since it uses more digits than its factorization.

88490185729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54108 (or 27054 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 61.

The spelling of 88490185729 in words is "eighty-eight billion, four hundred ninety million, one hundred eighty-five thousand, seven hundred twenty-nine".