139000843 has 2 divisors, whose sum is σ = 139000844. Its totient is φ = 139000842.

The previous prime is 139000837. The next prime is 139000853. The reversal of 139000843 is 348000931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139000843 - 2⁹ = 139000331 is a prime.

It is not a weakly prime, because it can be changed into another prime (139000853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69500421 + 69500422.

It is an arithmetic number, because the mean of its divisors is an integer number (69500422).

Almost surely, 2^139000843 is an apocalyptic number.

139000843 is a deficient number, since it is larger than the sum of its proper divisors (1).

139000843 is an equidigital number, since it uses as much as digits as its factorization.

139000843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 139000843 is about 11789.8618736608. The cubic root of 139000843 is about 518.0111939363.

The spelling of 139000843 in words is "one hundred thirty-nine million, eight hundred forty-three", and thus it is an aban number.