98781293 has 8 divisors (see below), whose sum is σ = 106970136. Its totient is φ = 90676800.

The previous prime is 98781289. The next prime is 98781299. The reversal of 98781293 is 39218789.

It can be written as a sum of positive squares in 4 ways, for example, as 19695844 + 79085449 = 4438^2 + 8893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 98781293 - 2² = 98781289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98781299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18638 + ... + 23343.

It is an arithmetic number, because the mean of its divisors is an integer number (13371267).

Almost surely, 2^98781293 is an apocalyptic number.

It is an amenable number.

98781293 is a deficient number, since it is larger than the sum of its proper divisors (8188843).

98781293 is a wasteful number, since it uses less digits than its factorization.

98781293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42175.

The product of its digits is 217728, while the sum is 47.

The square root of 98781293 is about 9938.8778541644. The cubic root of 98781293 is about 462.2655922457.

The spelling of 98781293 in words is "ninety-eight million, seven hundred eighty-one thousand, two hundred ninety-three".