940017881 has 4 divisors (see below), whose sum is σ = 1025474064. Its totient is φ = 854561700.

The previous prime is 940017877. The next prime is 940017899. The reversal of 940017881 is 188710049.

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 940017881 - 2² = 940017877 is a prime.

It is a super-2 number, since 2×940017881² = 1767267233199460322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (940017811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42728075 + ... + 42728096.

It is an arithmetic number, because the mean of its divisors is an integer number (256368516).

Almost surely, 2^940017881 is an apocalyptic number.

It is an amenable number.

940017881 is a deficient number, since it is larger than the sum of its proper divisors (85456183).

940017881 is a wasteful number, since it uses less digits than its factorization.

940017881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85456182.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 940017881 is about 30659.7110390819. The cubic root of 940017881 is about 979.5923200163.

The spelling of 940017881 in words is "nine hundred forty million, seventeen thousand, eight hundred eighty-one".