140403269 has 2 divisors, whose sum is σ = 140403270. Its totient is φ = 140403268.

The previous prime is 140403233. The next prime is 140403283. The reversal of 140403269 is 962304041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117983044 + 22420225 = 10862^2 + 4735^2 .

It is an emirp because it is prime and its reverse (962304041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140403269 - 2⁸ = 140403013 is a prime.

It is a super-2 number, since 2×140403269² = 39426155891772722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140403169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70201634 + 70201635.

It is an arithmetic number, because the mean of its divisors is an integer number (70201635).

Almost surely, 2^140403269 is an apocalyptic number.

It is an amenable number.

140403269 is a deficient number, since it is larger than the sum of its proper divisors (1).

140403269 is an equidigital number, since it uses as much as digits as its factorization.

140403269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 140403269 is about 11849.1885376172. The cubic root of 140403269 is about 519.7474969847.

The spelling of 140403269 in words is "one hundred forty million, four hundred three thousand, two hundred sixty-nine".