7743961 has 4 divisors (see below), whose sum is σ = 7766500. Its totient is φ = 7721424.

The previous prime is 7743949. The next prime is 7743991. The reversal of 7743961 is 1693477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1693477 = 59 ⋅28703.

It can be written as a sum of positive squares in 2 ways, for example, as 5433561 + 2310400 = 2331^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 7743961 - 2⁷ = 7743833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7743961.

It is not an unprimeable number, because it can be changed into a prime (7743941) 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, 10746 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (1941625).

Almost surely, 2^7743961 is an apocalyptic number.

It is an amenable number.

7743961 is a deficient number, since it is larger than the sum of its proper divisors (22539).

7743961 is a wasteful number, since it uses less digits than its factorization.

7743961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22538.

The product of its digits is 31752, while the sum is 37.

The square root of 7743961 is about 2782.7973336195. The cubic root of 7743961 is about 197.8431656058.

The spelling of 7743961 in words is "seven million, seven hundred forty-three thousand, nine hundred sixty-one".