140290349 has 4 divisors (see below), whose sum is σ = 141017436. Its totient is φ = 139563264.

The previous prime is 140290327. The next prime is 140290369. The reversal of 140290349 is 943092041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80227849 + 60062500 = 8957^2 + 7750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140290349 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 (140290369) 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, 363254 + ... + 363639.

It is an arithmetic number, because the mean of its divisors is an integer number (35254359).

Almost surely, 2^140290349 is an apocalyptic number.

It is an amenable number.

140290349 is a deficient number, since it is larger than the sum of its proper divisors (727087).

140290349 is an equidigital number, since it uses as much as digits as its factorization.

140290349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727086.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 140290349 is about 11844.4226959358. The cubic root of 140290349 is about 519.6081231446.

The spelling of 140290349 in words is "one hundred forty million, two hundred ninety thousand, three hundred forty-nine".