140689390 has 16 divisors (see below), whose sum is σ = 264251808. Its totient is φ = 53828896.

The previous prime is 140689387. The next prime is 140689391. The reversal of 140689390 is 93986041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140689391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305617 + ... + 306076.

It is an arithmetic number, because the mean of its divisors is an integer number (16515738).

Almost surely, 2^140689390 is an apocalyptic number.

140689390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140689390 is a deficient number, since it is larger than the sum of its proper divisors (123562418).

140689390 is a wasteful number, since it uses less digits than its factorization.

140689390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611723.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 140689390 is about 11861.2558357031. The cubic root of 140689390 is about 520.1003134875.

The spelling of 140689390 in words is "one hundred forty million, six hundred eighty-nine thousand, three hundred ninety".