99040231 has 8 divisors (see below), whose sum is σ = 106140384. Its totient is φ = 92172960.

The previous prime is 99040229. The next prime is 99040241. The reversal of 99040231 is 13204099.

It is a happy number.

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

It is not a de Polignac number, because 99040231 - 2¹ = 99040229 is a prime.

It is a super-2 number, since 2×99040231² = 19617934713066722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99040231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99040241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57340 + ... + 59041.

It is an arithmetic number, because the mean of its divisors is an integer number (13267548).

Almost surely, 2^99040231 is an apocalyptic number.

99040231 is a deficient number, since it is larger than the sum of its proper divisors (7100153).

99040231 is a wasteful number, since it uses less digits than its factorization.

99040231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116441.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 99040231 is about 9951.8958495354. The cubic root of 99040231 is about 462.6691561428.

The spelling of 99040231 in words is "ninety-nine million, forty thousand, two hundred thirty-one".