2091069 has 8 divisors (see below), whose sum is σ = 3097920. Its totient is φ = 1394028.

The previous prime is 2091053. The next prime is 2091097. The reversal of 2091069 is 9601902.

It is a happy number.

It is not a de Polignac number, because 2091069 - 2⁴ = 2091053 is a prime.

It is a super-2 number, since 2×2091069² = 8745139125522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 77447 = 2091069 / (2 + 0 + 9 + 1 + 0 + 6 + 9).

2091069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38697 + ... + 38750.

It is an arithmetic number, because the mean of its divisors is an integer number (387240).

2^2091069 is an apocalyptic number.

It is an amenable number.

2091069 is a deficient number, since it is larger than the sum of its proper divisors (1006851).

2091069 is an equidigital number, since it uses as much as digits as its factorization.

2091069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77456 (or 77450 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 2091069 is about 1446.0529035965. The cubic root of 2091069 is about 127.8761211966.

The spelling of 2091069 in words is "two million, ninety-one thousand, sixty-nine".