8542949 has 4 divisors (see below), whose sum is σ = 8818560. Its totient is φ = 8267340.

The previous prime is 8542943. The next prime is 8542973. The reversal of 8542949 is 9492458.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9492458 = 2 ⋅4746229.

It is a cyclic number.

It is not a de Polignac number, because 8542949 - 2¹² = 8538853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8542943) 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 in 3 ways as a sum of consecutive naturals, for example, 137759 + ... + 137820.

It is an arithmetic number, because the mean of its divisors is an integer number (2204640).

Almost surely, 2^8542949 is an apocalyptic number.

It is an amenable number.

8542949 is a deficient number, since it is larger than the sum of its proper divisors (275611).

8542949 is a wasteful number, since it uses less digits than its factorization.

8542949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275610.

The product of its digits is 103680, while the sum is 41.

The square root of 8542949 is about 2922.8323592023. The cubic root of 8542949 is about 204.4259091599.

It can be divided in two parts, 85 and 42949, that added together give a palindrome (43034).

The spelling of 8542949 in words is "eight million, five hundred forty-two thousand, nine hundred forty-nine".