140098381 has 4 divisors (see below), whose sum is σ = 147472000. Its totient is φ = 132724764.

The previous prime is 140098373. The next prime is 140098421. The reversal of 140098381 is 183890041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140098381 - 2³ = 140098373 is a prime.

It is a super-2 number, since 2×140098381² = 39255112717642322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140098351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686781 + ... + 3686818.

It is an arithmetic number, because the mean of its divisors is an integer number (36868000).

Almost surely, 2^140098381 is an apocalyptic number.

It is an amenable number.

140098381 is a deficient number, since it is larger than the sum of its proper divisors (7373619).

140098381 is an equidigital number, since it uses as much as digits as its factorization.

140098381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373618.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 140098381 is about 11836.3161921267. The cubic root of 140098381 is about 519.3710109348.

The spelling of 140098381 in words is "one hundred forty million, ninety-eight thousand, three hundred eighty-one".