140846861 has 4 divisors (see below), whose sum is σ = 142429500. Its totient is φ = 139264224.

The previous prime is 140846837. The next prime is 140846879. The reversal of 140846861 is 168648041.

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 96157636 + 44689225 = 9806^2 + 6685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140846861 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 (140846821) 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, 791186 + ... + 791363.

It is an arithmetic number, because the mean of its divisors is an integer number (35607375).

Almost surely, 2^140846861 is an apocalyptic number.

It is an amenable number.

140846861 is a deficient number, since it is larger than the sum of its proper divisors (1582639).

140846861 is an equidigital number, since it uses as much as digits as its factorization.

140846861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582638.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 140846861 is about 11867.8920200683. The cubic root of 140846861 is about 520.2942873159.

The spelling of 140846861 in words is "one hundred forty million, eight hundred forty-six thousand, eight hundred sixty-one".