91140298 has 8 divisors (see below), whose sum is σ = 144752292. Its totient is φ = 42889536.

The previous prime is 91140293. The next prime is 91140307. The reversal of 91140298 is 89204119.

It can be written as a sum of positive squares in 2 ways, for example, as 90573289 + 567009 = 9517^2 + 753^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 2680597 = 91140298 / (9 + 1 + 1 + 4 + 0 + 2 + 9 + 8).

It is not an unprimeable number, because it can be changed into a prime (91140293) 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, 1340265 + ... + 1340332.

Almost surely, 2^91140298 is an apocalyptic number.

91140298 is a deficient number, since it is larger than the sum of its proper divisors (53611994).

91140298 is a wasteful number, since it uses less digits than its factorization.

91140298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680616.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 91140298 is about 9546.7427953203. The cubic root of 91140298 is about 450.0251804840.

It can be divided in two parts, 911 and 40298, that added together give a square (41209 = 203²).

The spelling of 91140298 in words is "ninety-one million, one hundred forty thousand, two hundred ninety-eight".