2171006739 has 16 divisors (see below), whose sum is σ = 3508698240. Its totient is φ = 1315761480.

The previous prime is 2171006713. The next prime is 2171006741. The reversal of 2171006739 is 9376001712.

It is a happy number.

2171006739 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2171006739 - 2¹⁶ = 2170941203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2171006039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3654597 + ... + 3655190.

It is an arithmetic number, because the mean of its divisors is an integer number (219293640).

Almost surely, 2^2171006739 is an apocalyptic number.

2171006739 is a deficient number, since it is larger than the sum of its proper divisors (1337691501).

2171006739 is a wasteful number, since it uses less digits than its factorization.

2171006739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309807 (or 7309801 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 2171006739 is about 46594.0633450228. The cubic root of 2171006739 is about 1294.8527709864.

The spelling of 2171006739 in words is "two billion, one hundred seventy-one million, six thousand, seven hundred thirty-nine".