140374469 has 2 divisors, whose sum is σ = 140374470. Its totient is φ = 140374468.

The previous prime is 140374463. The next prime is 140374501. The reversal of 140374469 is 964473041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134908225 + 5466244 = 11615^2 + 2338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140374469 is a prime.

It is a super-2 number, since 2×140374469² = 39409983094063922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140374463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70187234 + 70187235.

It is an arithmetic number, because the mean of its divisors is an integer number (70187235).

Almost surely, 2^140374469 is an apocalyptic number.

It is an amenable number.

140374469 is a deficient number, since it is larger than the sum of its proper divisors (1).

140374469 is an equidigital number, since it uses as much as digits as its factorization.

140374469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 140374469 is about 11847.9732021979. The cubic root of 140374469 is about 519.7119570916.

The spelling of 140374469 in words is "one hundred forty million, three hundred seventy-four thousand, four hundred sixty-nine".