2190879 has 6 divisors (see below), whose sum is σ = 3164616. Its totient is φ = 1460580.

The previous prime is 2190857. The next prime is 2190887. The reversal of 2190879 is 9780912.

It is a happy number.

It is not a de Polignac number, because 2190879 - 2⁷ = 2190751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121707 + ... + 121724.

It is an arithmetic number, because the mean of its divisors is an integer number (527436).

2^2190879 is an apocalyptic number.

2190879 is a deficient number, since it is larger than the sum of its proper divisors (973737).

2190879 is a wasteful number, since it uses less digits than its factorization.

2190879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243437 (or 243434 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2190879 is about 1480.1618154783. The cubic root of 2190879 is about 129.8791579225.

The spelling of 2190879 in words is "two million, one hundred ninety thousand, eight hundred seventy-nine".