940715861 has 8 divisors (see below), whose sum is σ = 969909720. Its totient is φ = 911720448.

The previous prime is 940715827. The next prime is 940715899. The reversal of 940715861 is 168517049.

It can be written as a sum of positive squares in 4 ways, for example, as 432889636 + 507826225 = 20806^2 + 22535^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 940715861 - 2¹⁰ = 940714837 is a prime.

It is a super-2 number, since 2×940715861² = 1769892662273942642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940715561) 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, 39956 + ... + 58973.

It is an arithmetic number, because the mean of its divisors is an integer number (121238715).

Almost surely, 2^940715861 is an apocalyptic number.

It is an amenable number.

940715861 is a deficient number, since it is larger than the sum of its proper divisors (29193859).

940715861 is a wasteful number, since it uses less digits than its factorization.

940715861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99223.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 940715861 is about 30671.0916173520. The cubic root of 940715861 is about 979.8347149404.

The spelling of 940715861 in words is "nine hundred forty million, seven hundred fifteen thousand, eight hundred sixty-one".