863749 has 2 divisors, whose sum is σ = 863750. Its totient is φ = 863748.

The previous prime is 863743. The next prime is 863767. The reversal of 863749 is 947368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842724 + 21025 = 918^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 863749 - 2¹¹ = 861701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431874 + 431875.

It is an arithmetic number, because the mean of its divisors is an integer number (431875).

2⁸⁶³⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

863749 is a deficient number, since it is larger than the sum of its proper divisors (1).

863749 is an equidigital number, since it uses as much as digits as its factorization.

863749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 863749 is about 929.3809767797. The cubic root of 863749 is about 95.2348391307.

The spelling of 863749 in words is "eight hundred sixty-three thousand, seven hundred forty-nine".