139500407 has 2 divisors, whose sum is σ = 139500408. Its totient is φ = 139500406.

The previous prime is 139500391. The next prime is 139500433. The reversal of 139500407 is 704005931.

139500407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139500407 - 2⁴ = 139500391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139500407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139503407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69750203 + 69750204.

It is an arithmetic number, because the mean of its divisors is an integer number (69750204).

Almost surely, 2^139500407 is an apocalyptic number.

139500407 is a deficient number, since it is larger than the sum of its proper divisors (1).

139500407 is an equidigital number, since it uses as much as digits as its factorization.

139500407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 139500407 is about 11811.0290406890. The cubic root of 139500407 is about 518.6310231426.

The spelling of 139500407 in words is "one hundred thirty-nine million, five hundred thousand, four hundred seven".