140849749 has 2 divisors, whose sum is σ = 140849750. Its totient is φ = 140849748.

The previous prime is 140849711. The next prime is 140849773. The reversal of 140849749 is 947948041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99800100 + 41049649 = 9990^2 + 6407^2 .

It is an emirp because it is prime and its reverse (947948041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140849749 - 2¹¹ = 140847701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140849699 and 140849708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140829749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70424874 + 70424875.

It is an arithmetic number, because the mean of its divisors is an integer number (70424875).

Almost surely, 2^140849749 is an apocalyptic number.

It is an amenable number.

140849749 is a deficient number, since it is larger than the sum of its proper divisors (1).

140849749 is an equidigital number, since it uses as much as digits as its factorization.

140849749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 140849749 is about 11868.0136922739. The cubic root of 140849749 is about 520.2978434232.

The spelling of 140849749 in words is "one hundred forty million, eight hundred forty-nine thousand, seven hundred forty-nine".