4272640997 has 2 divisors, whose sum is σ = 4272640998. Its totient is φ = 4272640996.

The previous prime is 4272640943. The next prime is 4272641003. The reversal of 4272640997 is 7990462724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3444985636 + 827655361 = 58694^2 + 28769^2 .

It is a cyclic number.

It is not a de Polignac number, because 4272640997 - 2¹⁸ = 4272378853 is a prime.

It is a super-2 number, since 2×4272640997² = 36510922178490308018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4272640297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2136320498 + 2136320499.

It is an arithmetic number, because the mean of its divisors is an integer number (2136320499).

Almost surely, 2^4272640997 is an apocalyptic number.

It is an amenable number.

4272640997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4272640997 is an equidigital number, since it uses as much as digits as its factorization.

4272640997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 4272640997 is about 65365.4419169640. The cubic root of 4272640997 is about 1622.6772016721.

The spelling of 4272640997 in words is "four billion, two hundred seventy-two million, six hundred forty thousand, nine hundred ninety-seven".