98909621001 has 27 divisors (see below), whose sum is σ = 144809944461. Its totient is φ = 65056005144.

The previous prime is 98909620993. The next prime is 98909621011. The reversal of 98909621001 is 10012690989.

The square root of 98909621001 is 314499.

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

It is not a de Polignac number, because 98909621001 - 2³ = 98909620993 is a prime.

It is a super-2 number, since 2×98909621001² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98909621011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74535600 + ... + 74536926.

Almost surely, 2^98909621001 is an apocalyptic number.

98909621001 is the 314499-th square number.

98909621001 is the 157250-th centered octagonal number.

It is an amenable number.

98909621001 is a deficient number, since it is larger than the sum of its proper divisors (45900323460).

98909621001 is an frugal number, since it uses more digits than its factorization.

98909621001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 98909621001 in words is "ninety-eight billion, nine hundred nine million, six hundred twenty-one thousand, one".