8751949 has 2 divisors, whose sum is σ = 8751950. Its totient is φ = 8751948.

The previous prime is 8751931. The next prime is 8751973. The reversal of 8751949 is 9491578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8743849 + 8100 = 2957^2 + 90^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8751949 is a prime.

It is a super-2 number, since 2×8751949² = 153193222597202, which contains 22 as substring.

8751949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8751349) 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 as a sum of consecutive naturals, namely, 4375974 + 4375975.

It is an arithmetic number, because the mean of its divisors is an integer number (4375975).

Almost surely, 2^8751949 is an apocalyptic number.

It is an amenable number.

8751949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8751949 is an equidigital number, since it uses as much as digits as its factorization.

8751949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 8751949 is about 2958.3693143352. The cubic root of 8751949 is about 206.0795636356.

The spelling of 8751949 in words is "eight million, seven hundred fifty-one thousand, nine hundred forty-nine".