140408953 has 2 divisors, whose sum is σ = 140408954. Its totient is φ = 140408952.

The previous prime is 140408897. The next prime is 140408977. The reversal of 140408953 is 359804041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126630009 + 13778944 = 11253^2 + 3712^2 .

It is an emirp because it is prime and its reverse (359804041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140408953 - 2⁹ = 140408441 is a prime.

It is not a weakly prime, because it can be changed into another prime (140408453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70204476 + 70204477.

It is an arithmetic number, because the mean of its divisors is an integer number (70204477).

Almost surely, 2^140408953 is an apocalyptic number.

It is an amenable number.

140408953 is a deficient number, since it is larger than the sum of its proper divisors (1).

140408953 is an equidigital number, since it uses as much as digits as its factorization.

140408953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 140408953 is about 11849.4283828377. The cubic root of 140408953 is about 519.7545106032.

The spelling of 140408953 in words is "one hundred forty million, four hundred eight thousand, nine hundred fifty-three".