7930453906 has 4 divisors (see below), whose sum is σ = 11895680862. Its totient is φ = 3965226952.

The previous prime is 7930453903. The next prime is 7930453943. The reversal of 7930453906 is 6093540397.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4725875025 + 3204578881 = 68745^2 + 56609^2 .

It is not an unprimeable number, because it can be changed into a prime (7930453903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982613475 + ... + 1982613478.

Almost surely, 2^7930453906 is an apocalyptic number.

7930453906 is a deficient number, since it is larger than the sum of its proper divisors (3965226956).

7930453906 is a wasteful number, since it uses less digits than its factorization.

7930453906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965226955.

The product of its (nonzero) digits is 612360, while the sum is 46.

The square root of 7930453906 is about 89053.0959933455. The cubic root of 7930453906 is about 1994.1876166301.

The spelling of 7930453906 in words is "seven billion, nine hundred thirty million, four hundred fifty-three thousand, nine hundred six".