98903509 has 4 divisors (see below), whose sum is σ = 100524940. Its totient is φ = 97282080.

The previous prime is 98903489. The next prime is 98903527. The reversal of 98903509 is 90530989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90530989 = 2909 ⋅31121.

It can be written as a sum of positive squares in 2 ways, for example, as 3294225 + 95609284 = 1815^2 + 9778^2 .

It is a cyclic number.

It is not a de Polignac number, because 98903509 - 2⁵ = 98903477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98903549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810624 + ... + 810745.

It is an arithmetic number, because the mean of its divisors is an integer number (25131235).

Almost surely, 2^98903509 is an apocalyptic number.

It is an amenable number.

98903509 is a deficient number, since it is larger than the sum of its proper divisors (1621431).

98903509 is a wasteful number, since it uses less digits than its factorization.

98903509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621430.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 98903509 is about 9945.0243338063. The cubic root of 98903509 is about 462.4561579089.

The spelling of 98903509 in words is "ninety-eight million, nine hundred three thousand, five hundred nine".