99999954 has 16 divisors (see below), whose sum is σ = 222222240. Its totient is φ = 33333300.

The previous prime is 99999941. The next prime is 99999959. The reversal of 99999954 is 45999999.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99999891 and 99999900.

It is not an unprimeable number, because it can be changed into a prime (99999959) 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, 925872 + ... + 925979.

It is an arithmetic number, because the mean of its divisors is an integer number (13888890).

Almost surely, 2^99999954 is an apocalyptic number.

99999954 is an abundant number, since it is smaller than the sum of its proper divisors (122222286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99999954 is a wasteful number, since it uses less digits than its factorization.

99999954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851862 (or 1851856 counting only the distinct ones).

The product of its digits is 10628820, while the sum is 63.

The square root of 99999954 is about 9999.9976999997. The cubic root of 99999954 is about 464.1588121902.

It can be divided in two parts, 9999995 and 4, that added together give a palindrome (9999999).

The spelling of 99999954 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-four".