140809601 has 4 divisors (see below), whose sum is σ = 140936112. Its totient is φ = 140683092.

The previous prime is 140809597. The next prime is 140809607. The reversal of 140809601 is 106908041.

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 140809601 - 2² = 140809597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140809607) 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, 61571 + ... + 63816.

It is an arithmetic number, because the mean of its divisors is an integer number (35234028).

Almost surely, 2^140809601 is an apocalyptic number.

It is an amenable number.

140809601 is a deficient number, since it is larger than the sum of its proper divisors (126511).

140809601 is a wasteful number, since it uses less digits than its factorization.

140809601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126510.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 140809601 is about 11866.3221345116. The cubic root of 140809601 is about 520.2484032620.

The spelling of 140809601 in words is "one hundred forty million, eight hundred nine thousand, six hundred one".