140292689 has 2 divisors, whose sum is σ = 140292690. Its totient is φ = 140292688.

The previous prime is 140292673. The next prime is 140292727. The reversal of 140292689 is 986292041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80694289 + 59598400 = 8983^2 + 7720^2 .

It is a cyclic number.

It is not a de Polignac number, because 140292689 - 2⁴ = 140292673 is a prime.

It is equal to p_7927754 and since 140292689 and 7927754 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140292629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70146344 + 70146345.

It is an arithmetic number, because the mean of its divisors is an integer number (70146345).

Almost surely, 2^140292689 is an apocalyptic number.

It is an amenable number.

140292689 is a deficient number, since it is larger than the sum of its proper divisors (1).

140292689 is an equidigital number, since it uses as much as digits as its factorization.

140292689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 140292689 is about 11844.5214761931. The cubic root of 140292689 is about 519.6110120966.

The spelling of 140292689 in words is "one hundred forty million, two hundred ninety-two thousand, six hundred eighty-nine".