140738917 has 8 divisors (see below), whose sum is σ = 154107360. Its totient is φ = 127466160.

The previous prime is 140738879. The next prime is 140738921. The reversal of 140738917 is 719837041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140738917 - 2⁷ = 140738789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140738917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140739917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20823 + ... + 26740.

It is an arithmetic number, because the mean of its divisors is an integer number (19263420).

Almost surely, 2^140738917 is an apocalyptic number.

It is an amenable number.

140738917 is a deficient number, since it is larger than the sum of its proper divisors (13368443).

140738917 is a wasteful number, since it uses less digits than its factorization.

140738917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47843.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 140738917 is about 11863.3434157492. The cubic root of 140738917 is about 520.1613367723.

The spelling of 140738917 in words is "one hundred forty million, seven hundred thirty-eight thousand, nine hundred seventeen".