99998949 has 8 divisors (see below), whose sum is σ = 134706880. Its totient is φ = 65978496.

The previous prime is 99998933. The next prime is 99998953. The reversal of 99998949 is 94989999.

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 99998949 - 2⁴ = 99998933 is a prime.

It is a super-2 number, since 2×99998949² = 19999579602209202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99998949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99998909) 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, 171529 + ... + 172110.

It is an arithmetic number, because the mean of its divisors is an integer number (16838360).

Almost surely, 2^99998949 is an apocalyptic number.

It is an amenable number.

99998949 is a deficient number, since it is larger than the sum of its proper divisors (34707931).

99998949 is a wasteful number, since it uses less digits than its factorization.

99998949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343739.

The product of its digits is 17006112, while the sum is 66.

The square root of 99998949 is about 9999.9474498619. The cubic root of 99998949 is about 464.1572572523.

The spelling of 99998949 in words is "ninety-nine million, nine hundred ninety-eight thousand, nine hundred forty-nine".