140398807 has 2 divisors, whose sum is σ = 140398808. Its totient is φ = 140398806.

The previous prime is 140398799. The next prime is 140398859. The reversal of 140398807 is 708893041.

140398807 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 140398807 - 2³ = 140398799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140398807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140398507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70199403 + 70199404.

It is an arithmetic number, because the mean of its divisors is an integer number (70199404).

Almost surely, 2^140398807 is an apocalyptic number.

140398807 is a deficient number, since it is larger than the sum of its proper divisors (1).

140398807 is an equidigital number, since it uses as much as digits as its factorization.

140398807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 140398807 is about 11849.0002531859. Note that the first 3 decimals coincide. The cubic root of 140398807 is about 519.7419910875.

The spelling of 140398807 in words is "one hundred forty million, three hundred ninety-eight thousand, eight hundred seven".