4020902247 has 4 divisors (see below), whose sum is σ = 5361203000. Its totient is φ = 2680601496.

The previous prime is 4020902243. The next prime is 4020902309. The reversal of 4020902247 is 7422090204.

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

It is not a de Polignac number, because 4020902247 - 2² = 4020902243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020902243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670150372 + ... + 670150377.

It is an arithmetic number, because the mean of its divisors is an integer number (1340300750).

Almost surely, 2^4020902247 is an apocalyptic number.

4020902247 is a deficient number, since it is larger than the sum of its proper divisors (1340300753).

4020902247 is a wasteful number, since it uses less digits than its factorization.

4020902247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340300752.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 4020902247 is about 63410.5846606069. The cubic root of 4020902247 is about 1590.1612703792.

The spelling of 4020902247 in words is "four billion, twenty million, nine hundred two thousand, two hundred forty-seven".