140448697 has 2 divisors, whose sum is σ = 140448698. Its totient is φ = 140448696.

The previous prime is 140448691. The next prime is 140448709. The reversal of 140448697 is 796844041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92852496 + 47596201 = 9636^2 + 6899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140448697 is a prime.

It is not a weakly prime, because it can be changed into another prime (140448691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70224348 + 70224349.

It is an arithmetic number, because the mean of its divisors is an integer number (70224349).

Almost surely, 2^140448697 is an apocalyptic number.

It is an amenable number.

140448697 is a deficient number, since it is larger than the sum of its proper divisors (1).

140448697 is an equidigital number, since it uses as much as digits as its factorization.

140448697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 140448697 is about 11851.1053071011. The cubic root of 140448697 is about 519.8035463522.

The spelling of 140448697 in words is "one hundred forty million, four hundred forty-eight thousand, six hundred ninety-seven".