941640987 has 20 divisors (see below), whose sum is σ = 1464698920. Its totient is φ = 538076448.

The previous prime is 941640971. The next prime is 941641031. The reversal of 941640987 is 789046149.

It is not a de Polignac number, because 941640987 - 2⁴ = 941640971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (941640937) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58162 + ... + 72567.

It is an arithmetic number, because the mean of its divisors is an integer number (73234946).

Almost surely, 2^941640987 is an apocalyptic number.

941640987 is a deficient number, since it is larger than the sum of its proper divisors (523057933).

941640987 is an equidigital number, since it uses as much as digits as its factorization.

941640987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130760 (or 130739 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 941640987 is about 30686.1693112712. The cubic root of 941640987 is about 980.1558085603.

It can be divided in two parts, 9416 and 40987, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 941640987 in words is "nine hundred forty-one million, six hundred forty thousand, nine hundred eighty-seven".