2171914 has 4 divisors (see below), whose sum is σ = 3257874. Its totient is φ = 1085956.

The previous prime is 2171899. The next prime is 2171929. The reversal of 2171914 is 4191712.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2171899) and next prime (2171929).

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 164025 = 1417^2 + 405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542977 + ... + 542980.

2^2171914 is an apocalyptic number.

2171914 is a deficient number, since it is larger than the sum of its proper divisors (1085960).

2171914 is a wasteful number, since it uses less digits than its factorization.

2171914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085959.

The product of its digits is 504, while the sum is 25.

The square root of 2171914 is about 1473.7414970069. The cubic root of 2171914 is about 129.5033118317.

The spelling of 2171914 in words is "two million, one hundred seventy-one thousand, nine hundred fourteen".