99954149 has 4 divisors (see below), whose sum is σ = 100390860. Its totient is φ = 99517440.

The previous prime is 99954143. The next prime is 99954181. The reversal of 99954149 is 94145999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94145999 = 331 ⋅284429.

It can be written as a sum of positive squares in 2 ways, for example, as 86397025 + 13557124 = 9295^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 99954149 - 2⁴ = 99954133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99954097 and 99954106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99954143) 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 in 3 ways as a sum of consecutive naturals, for example, 218012 + ... + 218469.

It is an arithmetic number, because the mean of its divisors is an integer number (25097715).

Almost surely, 2^99954149 is an apocalyptic number.

It is an amenable number.

99954149 is a deficient number, since it is larger than the sum of its proper divisors (436711).

99954149 is a wasteful number, since it uses less digits than its factorization.

99954149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436710.

The product of its digits is 524880, while the sum is 50.

The square root of 99954149 is about 9997.7071871505. The cubic root of 99954149 is about 464.0879320197.

The spelling of 99954149 in words is "ninety-nine million, nine hundred fifty-four thousand, one hundred forty-nine".