99999254 has 4 divisors (see below), whose sum is σ = 149998884. Its totient is φ = 49999626.

The previous prime is 99999247. The next prime is 99999257. The reversal of 99999254 is 45299999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45299999 = 307 ⋅147557.

It is a self number, because there is not a number n which added to its sum of digits gives 99999254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999257) 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 as a sum of consecutive naturals, namely, 24999812 + ... + 24999815.

It is an arithmetic number, because the mean of its divisors is an integer number (37499721).

Almost surely, 2^99999254 is an apocalyptic number.

99999254 is a deficient number, since it is larger than the sum of its proper divisors (49999630).

99999254 is a wasteful number, since it uses less digits than its factorization.

99999254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49999629.

The product of its digits is 2361960, while the sum is 56.

The square root of 99999254 is about 9999.9626999304. The cubic root of 99999254 is about 464.1577291500.

The spelling of 99999254 in words is "ninety-nine million, nine hundred ninety-nine thousand, two hundred fifty-four".