939847 has 2 divisors, whose sum is σ = 939848. Its totient is φ = 939846.

The previous prime is 939839. The next prime is 939853. The reversal of 939847 is 748939.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 939847 - 2³ = 939839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469923 + 469924.

It is an arithmetic number, because the mean of its divisors is an integer number (469924).

2⁹³⁹⁸⁴⁷ is an apocalyptic number.

939847 is a deficient number, since it is larger than the sum of its proper divisors (1).

939847 is an equidigital number, since it uses as much as digits as its factorization.

939847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 939847 is about 969.4570645470. The cubic root of 939847 is about 97.9532958075.

The spelling of 939847 in words is "nine hundred thirty-nine thousand, eight hundred forty-seven".