117890211 has 24 divisors (see below), whose sum is σ = 163450672. Its totient is φ = 75571200.

The previous prime is 117890197. The next prime is 117890237. The reversal of 117890211 is 112098711.

117890211 = T₁₈ + T₁₉ + ... + T₈₉₀.

It is not a de Polignac number, because 117890211 - 2¹¹ = 117888163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117890261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489051 + ... + 489291.

Almost surely, 2^117890211 is an apocalyptic number.

117890211 is a deficient number, since it is larger than the sum of its proper divisors (45560461).

117890211 is an equidigital number, since it uses as much as digits as its factorization.

117890211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 117890211 is about 10857.7258668655. The cubic root of 117890211 is about 490.3346471458.

The spelling of 117890211 in words is "one hundred seventeen million, eight hundred ninety thousand, two hundred eleven".