99949557904 has 75 divisors (see below), whose sum is σ = 226054349273. Its totient is φ = 42808968384.

The previous prime is 99949557887. The next prime is 99949557973. The reversal of 99949557904 is 40975594999.

It is a happy number.

The square root of 99949557904 is 316148.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 62450010000 + 37499547904 = 249900^2 + 193648^2 .

It is a Duffinian number.

It is an unprimeable number.

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 14 ways as a sum of consecutive naturals, for example, 61964202 + ... + 61965814.

Almost surely, 2^99949557904 is an apocalyptic number.

99949557904 is the 316148-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99949557904

99949557904 is an abundant number, since it is smaller than the sum of its proper divisors (126104791369).

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

99949557904 is an frugal number, since it uses more digits than its factorization.

99949557904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 165337200, while the sum is 70.

The spelling of 99949557904 in words is "ninety-nine billion, nine hundred forty-nine million, five hundred fifty-seven thousand, nine hundred four".