140809194 has 12 divisors (see below), whose sum is σ = 305086626. Its totient is φ = 46936392.

The previous prime is 140809183. The next prime is 140809199. The reversal of 140809194 is 491908041.

140809194 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 101909025 + 38900169 = 10095^2 + 6237^2 .

It is a super-2 number, since 2×140809194² = 39654458229859272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140809199) 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 5 ways as a sum of consecutive naturals, for example, 3911349 + ... + 3911384.

Almost surely, 2^140809194 is an apocalyptic number.

140809194 is an abundant number, since it is smaller than the sum of its proper divisors (164277432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140809194 is a wasteful number, since it uses less digits than its factorization.

140809194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822741 (or 7822738 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 140809194 is about 11866.3049851249. The cubic root of 140809194 is about 520.2479020147.

The spelling of 140809194 in words is "one hundred forty million, eight hundred nine thousand, one hundred ninety-four".