139070023 has 2 divisors, whose sum is σ = 139070024. Its totient is φ = 139070022.

The previous prime is 139069963. The next prime is 139070027. The reversal of 139070023 is 320070931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139070023 - 2¹⁷ = 138938951 is a prime.

It is a super-4 number, since 4×139070023⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139070023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139070027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69535011 + 69535012.

It is an arithmetic number, because the mean of its divisors is an integer number (69535012).

Almost surely, 2^139070023 is an apocalyptic number.

139070023 is a deficient number, since it is larger than the sum of its proper divisors (1).

139070023 is an equidigital number, since it uses as much as digits as its factorization.

139070023 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 139070023 is about 11792.7953853190. The cubic root of 139070023 is about 518.0971168466.

The spelling of 139070023 in words is "one hundred thirty-nine million, seventy thousand, twenty-three".