4172640389 has 2 divisors, whose sum is σ = 4172640390. Its totient is φ = 4172640388.

The previous prime is 4172640377. The next prime is 4172640391. The reversal of 4172640389 is 9830462714.

4172640389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3698707489 + 473932900 = 60817^2 + 21770^2 .

It is a cyclic number.

It is not a de Polignac number, because 4172640389 - 2²⁰ = 4171591813 is a prime.

Together with 4172640391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4172600389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086320194 + 2086320195.

It is an arithmetic number, because the mean of its divisors is an integer number (2086320195).

Almost surely, 2^4172640389 is an apocalyptic number.

It is an amenable number.

4172640389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4172640389 is an equidigital number, since it uses as much as digits as its factorization.

4172640389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4172640389 is about 64595.9781178364. The cubic root of 4172640389 is about 1609.9176158608.

The spelling of 4172640389 in words is "four billion, one hundred seventy-two million, six hundred forty thousand, three hundred eighty-nine".