140829749 has 2 divisors, whose sum is σ = 140829750. Its totient is φ = 140829748.

The previous prime is 140829739. The next prime is 140829763. The reversal of 140829749 is 947928041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117722500 + 23107249 = 10850^2 + 4807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140829749 is a prime.

It is a super-4 number, since 4×140829749⁴ (a number of 34 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140829709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70414874 + 70414875.

It is an arithmetic number, because the mean of its divisors is an integer number (70414875).

Almost surely, 2^140829749 is an apocalyptic number.

It is an amenable number.

140829749 is a deficient number, since it is larger than the sum of its proper divisors (1).

140829749 is an equidigital number, since it uses as much as digits as its factorization.

140829749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 140829749 is about 11867.1710613777. The cubic root of 140829749 is about 520.2732156443.

The spelling of 140829749 in words is "one hundred forty million, eight hundred twenty-nine thousand, seven hundred forty-nine".