140583961 has 8 divisors (see below), whose sum is σ = 163391040. Its totient is φ = 118457808.

The previous prime is 140583959. The next prime is 140583991. The reversal of 140583961 is 169385041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140583961 - 2¹ = 140583959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140583961.

It is not an unprimeable number, because it can be changed into a prime (140583901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169786 + ... + 170611.

It is an arithmetic number, because the mean of its divisors is an integer number (20423880).

Almost surely, 2^140583961 is an apocalyptic number.

It is an amenable number.

140583961 is a deficient number, since it is larger than the sum of its proper divisors (22807079).

140583961 is an equidigital number, since it uses as much as digits as its factorization.

140583961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340463.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 140583961 is about 11856.8107431973. The cubic root of 140583961 is about 519.9703644353.

The spelling of 140583961 in words is "one hundred forty million, five hundred eighty-three thousand, nine hundred sixty-one".