7918949 has 4 divisors (see below), whose sum is σ = 7995936. Its totient is φ = 7841964.

The previous prime is 7918913. The next prime is 7918951. The reversal of 7918949 is 9498197.

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 7918949 - 2¹² = 7914853 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 (7918909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38339 + ... + 38544.

It is an arithmetic number, because the mean of its divisors is an integer number (1998984).

Almost surely, 2^7918949 is an apocalyptic number.

It is an amenable number.

7918949 is a deficient number, since it is larger than the sum of its proper divisors (76987).

7918949 is a wasteful number, since it uses less digits than its factorization.

7918949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76986.

The product of its digits is 163296, while the sum is 47.

The square root of 7918949 is about 2814.0627214048. The cubic root of 7918949 is about 199.3222810793.

The spelling of 7918949 in words is "seven million, nine hundred eighteen thousand, nine hundred forty-nine".