99879490 has 8 divisors (see below), whose sum is σ = 179783100. Its totient is φ = 39951792.

The previous prime is 99879487. The next prime is 99879491. The reversal of 99879490 is 9497899.

It can be written as a sum of positive squares in 2 ways, for example, as 86285521 + 13593969 = 9289^2 + 3687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (99879491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4993965 + ... + 4993984.

Almost surely, 2^99879490 is an apocalyptic number.

99879490 is a deficient number, since it is larger than the sum of its proper divisors (79903610).

99879490 is a wasteful number, since it uses less digits than its factorization.

99879490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9987956.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 99879490 is about 9993.9726835728. The cubic root of 99879490 is about 463.9723557896.

The spelling of 99879490 in words is "ninety-nine million, eight hundred seventy-nine thousand, four hundred ninety".