140267749 has 2 divisors, whose sum is σ = 140267750. Its totient is φ = 140267748.

The previous prime is 140267719. The next prime is 140267753. The reversal of 140267749 is 947762041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106708900 + 33558849 = 10330^2 + 5793^2 .

It is a cyclic number.

It is not a de Polignac number, because 140267749 - 2⁵ = 140267717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140267719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70133874 + 70133875.

It is an arithmetic number, because the mean of its divisors is an integer number (70133875).

Almost surely, 2^140267749 is an apocalyptic number.

It is an amenable number.

140267749 is a deficient number, since it is larger than the sum of its proper divisors (1).

140267749 is an equidigital number, since it uses as much as digits as its factorization.

140267749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 140267749 is about 11843.4686219874. The cubic root of 140267749 is about 519.5802196471.

The spelling of 140267749 in words is "one hundred forty million, two hundred sixty-seven thousand, seven hundred forty-nine".