747869 has 2 divisors, whose sum is σ = 747870. Its totient is φ = 747868.

The previous prime is 747863. The next prime is 747871. The reversal of 747869 is 968747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 372100 = 613^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 747869 - 2⁴ = 747853 is a prime.

It is a super-2 number, since 2×747869² = 1118616082322, which contains 22 as substring.

Together with 747871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373934 + 373935.

It is an arithmetic number, because the mean of its divisors is an integer number (373935).

2⁷⁴⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

747869 is a deficient number, since it is larger than the sum of its proper divisors (1).

747869 is an equidigital number, since it uses as much as digits as its factorization.

747869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 747869 is about 864.7941951702. The cubic root of 747869 is about 90.7698972579.

The spelling of 747869 in words is "seven hundred forty-seven thousand, eight hundred sixty-nine".