2140969 has 2 divisors, whose sum is σ = 2140970. Its totient is φ = 2140968.

The previous prime is 2140967. The next prime is 2140973. The reversal of 2140969 is 9690412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1996569 + 144400 = 1413^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140969 - 2¹ = 2140967 is a prime.

It is a super-2 number, since 2×2140969² = 9167496517922, which contains 22 as substring.

Together with 2140967, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2140969.

It is not a weakly prime, because it can be changed into another prime (2140967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070484 + 1070485.

It is an arithmetic number, because the mean of its divisors is an integer number (1070485).

2^2140969 is an apocalyptic number.

It is an amenable number.

2140969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140969 is an equidigital number, since it uses as much as digits as its factorization.

2140969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2140969 is about 1463.2050437311. The cubic root of 2140969 is about 128.8853216358.

The spelling of 2140969 in words is "two million, one hundred forty thousand, nine hundred sixty-nine".