4000979485 has 4 divisors (see below), whose sum is σ = 4801175388. Its totient is φ = 3200783584.

The previous prime is 4000979471. The next prime is 4000979501. The reversal of 4000979485 is 5849790004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1265794084 + 2735185401 = 35578^2 + 52299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000979485 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400097944 + ... + 400097953.

It is an arithmetic number, because the mean of its divisors is an integer number (1200293847).

Almost surely, 2^4000979485 is an apocalyptic number.

It is an amenable number.

4000979485 is a deficient number, since it is larger than the sum of its proper divisors (800195903).

4000979485 is an equidigital number, since it uses as much as digits as its factorization.

4000979485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800195902.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 4000979485 is about 63253.2962382199. The cubic root of 4000979485 is about 1587.5306110203.

The spelling of 4000979485 in words is "four billion, nine hundred seventy-nine thousand, four hundred eighty-five".