140997386 has 16 divisors (see below), whose sum is σ = 215039880. Its totient is φ = 69327360.

The previous prime is 140997379. The next prime is 140997397. The reversal of 140997386 is 683799041.

It can be written as a sum of positive squares in 4 ways, for example, as 133841761 + 7155625 = 11569^2 + 2675^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140997386.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 27506 + ... + 32226.

Almost surely, 2^140997386 is an apocalyptic number.

140997386 is a deficient number, since it is larger than the sum of its proper divisors (74042494).

140997386 is a wasteful number, since it uses less digits than its factorization.

With its successor (140997387) it forms an eRAP, since the sums of their prime factors are consecutive (4969 and 4970).

140997386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 140997386 is about 11874.2320172717. The cubic root of 140997386 is about 520.4795699082.

The spelling of 140997386 in words is "one hundred forty million, nine hundred ninety-seven thousand, three hundred eighty-six".