99980049 has 16 divisors (see below), whose sum is σ = 143796800. Its totient is φ = 61425216.

The previous prime is 99980047. The next prime is 99980063. The reversal of 99980049 is 94008999.

It is a happy number.

It is not a de Polignac number, because 99980049 - 2¹ = 99980047 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99980047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27087 + ... + 30555.

It is an arithmetic number, because the mean of its divisors is an integer number (8987300).

Almost surely, 2^99980049 is an apocalyptic number.

It is an amenable number.

99980049 is a deficient number, since it is larger than the sum of its proper divisors (43816751).

99980049 is a wasteful number, since it uses less digits than its factorization.

99980049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 99980049 is about 9999.0024002397. The cubic root of 99980049 is about 464.1280131953.

Subtracting from 99980049 its sum of digits (48), we obtain a square (99980001 = 9999²).

The spelling of 99980049 in words is "ninety-nine million, nine hundred eighty thousand, forty-nine".