4020995247 has 4 divisors (see below), whose sum is σ = 5361327000. Its totient is φ = 2680663496.

The previous prime is 4020995207. The next prime is 4020995249. The reversal of 4020995247 is 7425990204.

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 4020995247 - 2⁷ = 4020995119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4020995199 and 4020995208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020995249) 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, 670165872 + ... + 670165877.

It is an arithmetic number, because the mean of its divisors is an integer number (1340331750).

Almost surely, 2^4020995247 is an apocalyptic number.

4020995247 is a deficient number, since it is larger than the sum of its proper divisors (1340331753).

4020995247 is a wasteful number, since it uses less digits than its factorization.

4020995247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340331752.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 4020995247 is about 63411.3179724251. The cubic root of 4020995247 is about 1590.1735299708.

The spelling of 4020995247 in words is "four billion, twenty million, nine hundred ninety-five thousand, two hundred forty-seven".