2091269 has 2 divisors, whose sum is σ = 2091270. Its totient is φ = 2091268.

The previous prime is 2091251. The next prime is 2091281. The reversal of 2091269 is 9621902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 214369 = 1370^2 + 463^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091269 - 2¹⁶ = 2025733 is a prime.

It is a super-2 number, since 2×2091269² = 8746812060722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045634 + 1045635.

It is an arithmetic number, because the mean of its divisors is an integer number (1045635).

2^2091269 is an apocalyptic number.

It is an amenable number.

2091269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091269 is an equidigital number, since it uses as much as digits as its factorization.

2091269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2091269 is about 1446.1220557062. The cubic root of 2091269 is about 127.8801979645.

The spelling of 2091269 in words is "two million, ninety-one thousand, two hundred sixty-nine".