8118949 has 2 divisors, whose sum is σ = 8118950. Its totient is φ = 8118948.

The previous prime is 8118919. The next prime is 8118953. The reversal of 8118949 is 9498118.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6796449 + 1322500 = 2607^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 8118949 - 2¹⁵ = 8086181 is a prime.

It is a Chen prime.

8118949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8118919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4059474 + 4059475.

It is an arithmetic number, because the mean of its divisors is an integer number (4059475).

Almost surely, 2^8118949 is an apocalyptic number.

It is an amenable number.

8118949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8118949 is an equidigital number, since it uses as much as digits as its factorization.

8118949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 40.

The square root of 8118949 is about 2849.3769494400. The cubic root of 8118949 is about 200.9863690500.

The spelling of 8118949 in words is "eight million, one hundred eighteen thousand, nine hundred forty-nine".