140698837 has 4 divisors (see below), whose sum is σ = 140722636. Its totient is φ = 140675040.

The previous prime is 140698799. The next prime is 140698867. The reversal of 140698837 is 738896041.

It is a happy number.

It is the 4843-rd star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 76842756 + 63856081 = 8766^2 + 7991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140698837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140698867) 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 in 3 ways as a sum of consecutive naturals, for example, 4537 + ... + 17377.

It is an arithmetic number, because the mean of its divisors is an integer number (35180659).

Almost surely, 2^140698837 is an apocalyptic number.

It is an amenable number.

140698837 is a deficient number, since it is larger than the sum of its proper divisors (23799).

140698837 is a wasteful number, since it uses less digits than its factorization.

140698837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23798.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 140698837 is about 11861.6540583512. The cubic root of 140698837 is about 520.1119544451. Note that the first 3 decimals are identical.

The spelling of 140698837 in words is "one hundred forty million, six hundred ninety-eight thousand, eight hundred thirty-seven".