7748913 has 4 divisors (see below), whose sum is σ = 10331888. Its totient is φ = 5165940.

The previous prime is 7748911. The next prime is 7748921. The reversal of 7748913 is 3198477.

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: 3198477 = 3 ⋅1066159.

It is not a de Polignac number, because 7748913 - 2¹ = 7748911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7748911) 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, 1291483 + ... + 1291488.

It is an arithmetic number, because the mean of its divisors is an integer number (2582972).

Almost surely, 2^7748913 is an apocalyptic number.

It is an amenable number.

7748913 is a deficient number, since it is larger than the sum of its proper divisors (2582975).

7748913 is a wasteful number, since it uses less digits than its factorization.

7748913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582974.

The product of its digits is 42336, while the sum is 39.

The square root of 7748913 is about 2783.6869436055. The cubic root of 7748913 is about 197.8853279478.

The spelling of 7748913 in words is "seven million, seven hundred forty-eight thousand, nine hundred thirteen".