140400047 has 2 divisors, whose sum is σ = 140400048. Its totient is φ = 140400046.

The previous prime is 140400037. The next prime is 140400067. The reversal of 140400047 is 740004041.

It is an a-pointer prime, because the next prime (140400067) can be obtained adding 140400047 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140400047 - 2⁶ = 140399983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140400037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70200023 + 70200024.

It is an arithmetic number, because the mean of its divisors is an integer number (70200024).

Almost surely, 2^140400047 is an apocalyptic number.

140400047 is a deficient number, since it is larger than the sum of its proper divisors (1).

140400047 is an equidigital number, since it uses as much as digits as its factorization.

140400047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 140400047 is about 11849.0525781600. The cubic root of 140400047 is about 519.7435212006.

Adding to 140400047 its reverse (740004041), we get a palindrome (880404088).

The spelling of 140400047 in words is "one hundred forty million, four hundred thousand, forty-seven".