7930 has 16 divisors (see below), whose sum is σ = 15624. Its totient is φ = 2880.

The previous prime is 7927. The next prime is 7933. The reversal of 7930 is 397.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7927) and next prime (7933).

It can be written as a sum of positive squares in 4 ways, for example, as 2601 + 5329 = 51^2 + 73^2 .

It is an Ulam number.

7930 is an undulating number in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 7898 and 7907.

It is not an unprimeable number, because it can be changed into a prime (7933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100 + ... + 160.

2⁷⁹³⁰ is an apocalyptic number.

7930 is a deficient number, since it is larger than the sum of its proper divisors (7694).

7930 is a wasteful number, since it uses less digits than its factorization.

7930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 7930 is about 89.0505474436. The cubic root of 7930 is about 19.9414956959.

The spelling of 7930 in words is "seven thousand, nine hundred thirty".