140744789 has 2 divisors, whose sum is σ = 140744790. Its totient is φ = 140744788.

The previous prime is 140744783. The next prime is 140744809. The reversal of 140744789 is 987447041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 3034564 = 11735^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 140744789 - 2²⁰ = 139696213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140744783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70372394 + 70372395.

It is an arithmetic number, because the mean of its divisors is an integer number (70372395).

Almost surely, 2^140744789 is an apocalyptic number.

It is an amenable number.

140744789 is a deficient number, since it is larger than the sum of its proper divisors (1).

140744789 is an equidigital number, since it uses as much as digits as its factorization.

140744789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 140744789 is about 11863.5908982062. The cubic root of 140744789 is about 520.1685708408.

The spelling of 140744789 in words is "one hundred forty million, seven hundred forty-four thousand, seven hundred eighty-nine".