2190907 has 4 divisors (see below), whose sum is σ = 2218720. Its totient is φ = 2163096.

The previous prime is 2190901. The next prime is 2190959. The reversal of 2190907 is 7090912.

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

It is a cyclic number.

It is not a de Polignac number, because 2190907 - 2¹⁵ = 2158139 is a prime.

It is a cake number, because a cake can be divided into 2190907 parts by 236 planar cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2190901) 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, 13788 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (554680).

2^2190907 is an apocalyptic number.

2190907 is a deficient number, since it is larger than the sum of its proper divisors (27813).

2190907 is an equidigital number, since it uses as much as digits as its factorization.

2190907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27812.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 2190907 is about 1480.1712738734. The cubic root of 2190907 is about 129.8797112165.

The spelling of 2190907 in words is "two million, one hundred ninety thousand, nine hundred seven".