99783149 has 4 divisors (see below), whose sum is σ = 105652764. Its totient is φ = 93913536.

The previous prime is 99783143. The next prime is 99783157. The reversal of 99783149 is 94138799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94138799 = 61 ⋅1543259.

It can be written as a sum of positive squares in 2 ways, for example, as 56355049 + 43428100 = 7507^2 + 6590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99783149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99783097 and 99783106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99783143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934782 + ... + 2934815.

It is an arithmetic number, because the mean of its divisors is an integer number (26413191).

Almost surely, 2^99783149 is an apocalyptic number.

It is an amenable number.

99783149 is a deficient number, since it is larger than the sum of its proper divisors (5869615).

99783149 is a wasteful number, since it uses less digits than its factorization.

99783149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869614.

The product of its digits is 489888, while the sum is 50.

The square root of 99783149 is about 9989.1515655735. The cubic root of 99783149 is about 463.8231294889.

The spelling of 99783149 in words is "ninety-nine million, seven hundred eighty-three thousand, one hundred forty-nine".