723000139 has 2 divisors, whose sum is σ = 723000140. Its totient is φ = 723000138.

The previous prime is 723000079. The next prime is 723000163. The reversal of 723000139 is 931000327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 723000139 - 2¹¹ = 722998091 is a prime.

It is not a weakly prime, because it can be changed into another prime (723000169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361500069 + 361500070.

It is an arithmetic number, because the mean of its divisors is an integer number (361500070).

Almost surely, 2^723000139 is an apocalyptic number.

723000139 is a deficient number, since it is larger than the sum of its proper divisors (1).

723000139 is an equidigital number, since it uses as much as digits as its factorization.

723000139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 723000139 is about 26888.6619042302. The cubic root of 723000139 is about 897.5241165350.

The spelling of 723000139 in words is "seven hundred twenty-three million, one hundred thirty-nine", and thus it is an aban number.