4272391922 has 6 divisors (see below), whose sum is σ = 6408726543. Its totient is φ = 2136149742.

The previous prime is 4272391891. The next prime is 4272391939. The reversal of 4272391922 is 2291932724.

It can be written as a sum of positive squares in only one way, i.e., 2136195961 + 2136195961 = 46219^2 + 46219^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=46219.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4272391922.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 69329 + ... + 115547.

Almost surely, 2^4272391922 is an apocalyptic number.

4272391922 is a deficient number, since it is larger than the sum of its proper divisors (2136334621).

4272391922 is an frugal number, since it uses more digits than its factorization.

4272391922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92440 (or 46221 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 4272391922 is about 65363.5366393221. The cubic root of 4272391922 is about 1622.6456695605.

The spelling of 4272391922 in words is "four billion, two hundred seventy-two million, three hundred ninety-one thousand, nine hundred twenty-two".