140382779 has 2 divisors, whose sum is σ = 140382780. Its totient is φ = 140382778.

The previous prime is 140382757. The next prime is 140382839. The reversal of 140382779 is 977283041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140382779 - 2⁸ = 140382523 is a prime.

It is not a weakly prime, because it can be changed into another prime (140382079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70191389 + 70191390.

It is an arithmetic number, because the mean of its divisors is an integer number (70191390).

Almost surely, 2^140382779 is an apocalyptic number.

140382779 is a deficient number, since it is larger than the sum of its proper divisors (1).

140382779 is an equidigital number, since it uses as much as digits as its factorization.

140382779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 140382779 is about 11848.3238899011. The cubic root of 140382779 is about 519.7222123305.

The spelling of 140382779 in words is "one hundred forty million, three hundred eighty-two thousand, seven hundred seventy-nine".