140409047 has 2 divisors, whose sum is σ = 140409048. Its totient is φ = 140409046.

The previous prime is 140409037. The next prime is 140409053. The reversal of 140409047 is 740904041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140409047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140409037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70204523 + 70204524.

It is an arithmetic number, because the mean of its divisors is an integer number (70204524).

Almost surely, 2^140409047 is an apocalyptic number.

140409047 is a deficient number, since it is larger than the sum of its proper divisors (1).

140409047 is an equidigital number, since it uses as much as digits as its factorization.

140409047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 140409047 is about 11849.4323492731. The cubic root of 140409047 is about 519.7546265904.

The spelling of 140409047 in words is "one hundred forty million, four hundred nine thousand, forty-seven".