920869 has 2 divisors, whose sum is σ = 920870. Its totient is φ = 920868.

The previous prime is 920863. The next prime is 920891. The reversal of 920869 is 968029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471969 + 448900 = 687^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 920869 - 2⁷ = 920741 is a prime.

It is a super-2 number, since 2×920869² = 1695999430322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460434 + 460435.

It is an arithmetic number, because the mean of its divisors is an integer number (460435).

2⁹²⁰⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

920869 is a deficient number, since it is larger than the sum of its proper divisors (1).

920869 is an equidigital number, since it uses as much as digits as its factorization.

920869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 920869 is about 959.6191953061. The cubic root of 920869 is about 97.2894954378.

It can be divided in two parts, 920 and 869, that multiplied together give a triangular number (799480 = T₁₂₆₄).

The spelling of 920869 in words is "nine hundred twenty thousand, eight hundred sixty-nine".