140459447 has 2 divisors, whose sum is σ = 140459448. Its totient is φ = 140459446.

The previous prime is 140459401. The next prime is 140459461. The reversal of 140459447 is 744954041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140459447 - 2¹² = 140455351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140459447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140459467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70229723 + 70229724.

It is an arithmetic number, because the mean of its divisors is an integer number (70229724).

Almost surely, 2^140459447 is an apocalyptic number.

140459447 is a deficient number, since it is larger than the sum of its proper divisors (1).

140459447 is an equidigital number, since it uses as much as digits as its factorization.

140459447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 140459447 is about 11851.5588426164. The cubic root of 140459447 is about 519.8168080050.

The spelling of 140459447 in words is "one hundred forty million, four hundred fifty-nine thousand, four hundred forty-seven".