2170949 has 4 divisors (see below), whose sum is σ = 2368320. Its totient is φ = 1973580.

The previous prime is 2170943. The next prime is 2171003. The reversal of 2170949 is 9490712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2170949 - 2¹⁶ = 2105413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170943) 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, 98669 + ... + 98690.

It is an arithmetic number, because the mean of its divisors is an integer number (592080).

2^2170949 is an apocalyptic number.

It is an amenable number.

2170949 is a deficient number, since it is larger than the sum of its proper divisors (197371).

2170949 is a wasteful number, since it uses less digits than its factorization.

2170949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197370.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2170949 is about 1473.4140626450. The cubic root of 2170949 is about 129.4841291801.

The spelling of 2170949 in words is "two million, one hundred seventy thousand, nine hundred forty-nine".