2171390396 has 24 divisors (see below), whose sum is σ = 4387557216. Its totient is φ = 921000960.

The previous prime is 2171390383. The next prime is 2171390413. The reversal of 2171390396 is 6930931712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397025 + ... + 402456.

It is an arithmetic number, because the mean of its divisors is an integer number (182814884).

Almost surely, 2^2171390396 is an apocalyptic number.

It is an amenable number.

2171390396 is an abundant number, since it is smaller than the sum of its proper divisors (2216166820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171390396 is a wasteful number, since it uses less digits than its factorization.

2171390396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799589 (or 799587 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 2171390396 is about 46598.1801790585. The cubic root of 2171390396 is about 1294.9290412961.

The spelling of 2171390396 in words is "two billion, one hundred seventy-one million, three hundred ninety thousand, three hundred ninety-six".