481309979 has 4 divisors (see below), whose sum is σ = 481412520. Its totient is φ = 481207440.

The previous prime is 481309963. The next prime is 481309981. The reversal of 481309979 is 979903184.

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

It is a cyclic number.

It is not a de Polignac number, because 481309979 - 2⁴ = 481309963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481302979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43874 + ... + 53735.

It is an arithmetic number, because the mean of its divisors is an integer number (120353130).

Almost surely, 2^481309979 is an apocalyptic number.

481309979 is a deficient number, since it is larger than the sum of its proper divisors (102541).

481309979 is an equidigital number, since it uses as much as digits as its factorization.

481309979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102540.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 481309979 is about 21938.7779741717. Note that the first 3 decimals coincide. The cubic root of 481309979 is about 783.6851582503.

The spelling of 481309979 in words is "four hundred eighty-one million, three hundred nine thousand, nine hundred seventy-nine".