2140897 has 16 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 1840000.

The previous prime is 2140877. The next prime is 2140903. The reversal of 2140897 is 7980412.

It is a cyclic number.

It is not a de Polignac number, because 2140897 - 2⁷ = 2140769 is a prime.

It is an Ulam number.

It is a Duffinian number.

2140897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2140807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21147 + ... + 21247.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^2140897 is an apocalyptic number.

It is an amenable number.

2140897 is a deficient number, since it is larger than the sum of its proper divisors (326687).

2140897 is a wasteful number, since it uses less digits than its factorization.

2140897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2140897 is about 1463.1804400005. The cubic root of 2140897 is about 128.8838768309.

The spelling of 2140897 in words is "two million, one hundred forty thousand, eight hundred ninety-seven".