2190471 has 4 divisors (see below), whose sum is σ = 2920632. Its totient is φ = 1460312.

The previous prime is 2190469. The next prime is 2190473. The reversal of 2190471 is 1740912.

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 (2190469) and next prime (2190473).

It is a cyclic number.

It is not a de Polignac number, because 2190471 - 2¹ = 2190469 is a prime.

It is a super-3 number, since 3×2190471³ = 31530712040699571333, which contains 333 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365076 + ... + 365081.

It is an arithmetic number, because the mean of its divisors is an integer number (730158).

2^2190471 is an apocalyptic number.

2190471 is a deficient number, since it is larger than the sum of its proper divisors (730161).

2190471 is an equidigital number, since it uses as much as digits as its factorization.

2190471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730160.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 2190471 is about 1480.0239862921. The cubic root of 2190471 is about 129.8710951029.

The spelling of 2190471 in words is "two million, one hundred ninety thousand, four hundred seventy-one".