99955240 has 256 divisors, whose sum is σ = 313528320. Its totient is φ = 27709440.

The previous prime is 99955231. The next prime is 99955283. The reversal of 99955240 is 4255999.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1204239 + ... + 1204321.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^99955240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99955240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156764160).

99955240 is an abundant number, since it is smaller than the sum of its proper divisors (213573080).

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

99955240 is a wasteful number, since it uses less digits than its factorization.

99955240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 99955240 is about 9997.7617495117. The cubic root of 99955240 is about 464.0896205208.

The spelling of 99955240 in words is "ninety-nine million, nine hundred fifty-five thousand, two hundred forty".