140383861 has 2 divisors, whose sum is σ = 140383862. Its totient is φ = 140383860.

The previous prime is 140383847. The next prime is 140383879. The reversal of 140383861 is 168383041.

140383861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99500625 + 40883236 = 9975^2 + 6394^2 .

It is a cyclic number.

It is not a de Polignac number, because 140383861 - 2⁵ = 140383829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140383801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70191930 + 70191931.

It is an arithmetic number, because the mean of its divisors is an integer number (70191931).

Almost surely, 2^140383861 is an apocalyptic number.

It is an amenable number.

140383861 is a deficient number, since it is larger than the sum of its proper divisors (1).

140383861 is an equidigital number, since it uses as much as digits as its factorization.

140383861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 140383861 is about 11848.3695502799. The cubic root of 140383861 is about 519.7235475797.

It can be divided in two parts, 1403 and 83861, that added together give a square (85264 = 292²).

The spelling of 140383861 in words is "one hundred forty million, three hundred eighty-three thousand, eight hundred sixty-one".