8749149 has 4 divisors (see below), whose sum is σ = 11665536. Its totient is φ = 5832764.

The previous prime is 8749141. The next prime is 8749151. The reversal of 8749149 is 9419478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8749149 - 2³ = 8749141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8749149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8749141) 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, 1458189 + ... + 1458194.

It is an arithmetic number, because the mean of its divisors is an integer number (2916384).

Almost surely, 2^8749149 is an apocalyptic number.

It is an amenable number.

8749149 is a deficient number, since it is larger than the sum of its proper divisors (2916387).

8749149 is a wasteful number, since it uses less digits than its factorization.

8749149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916386.

The product of its digits is 72576, while the sum is 42.

The square root of 8749149 is about 2957.8960427980. The cubic root of 8749149 is about 206.0575843666.

The spelling of 8749149 in words is "eight million, seven hundred forty-nine thousand, one hundred forty-nine".