140406223459 has 2 divisors, whose sum is σ = 140406223460. Its totient is φ = 140406223458.

The previous prime is 140406223423. The next prime is 140406223471. The reversal of 140406223459 is 954322604041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140406223459 - 2¹⁹ = 140405699171 is a prime.

It is not a weakly prime, because it can be changed into another prime (140406223259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70203111729 + 70203111730.

It is an arithmetic number, because the mean of its divisors is an integer number (70203111730).

Almost surely, 2^140406223459 is an apocalyptic number.

140406223459 is a deficient number, since it is larger than the sum of its proper divisors (1).

140406223459 is an equidigital number, since it uses as much as digits as its factorization.

140406223459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 140406223459 in words is "one hundred forty billion, four hundred six million, two hundred twenty-three thousand, four hundred fifty-nine".