40889865942 has 24 divisors (see below), whose sum is σ = 89159013216. Its totient is φ = 13543139376.

The previous prime is 40889865941. The next prime is 40889865943. The reversal of 40889865942 is 24956898804.

40889865942 is a `hidden beast` number, since 408 + 89 + 8 + 65 + 94 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (40889865941) and next prime (40889865943).

It is a super-2 number, since 2×40889865942² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40889865942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40889865941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7231758 + ... + 7237409.

It is an arithmetic number, because the mean of its divisors is an integer number (3714958884).

Almost surely, 2^40889865942 is an apocalyptic number.

40889865942 is an abundant number, since it is smaller than the sum of its proper divisors (48269147274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40889865942 is a wasteful number, since it uses less digits than its factorization.

40889865942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469332 (or 14469329 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 40889865942 in words is "forty billion, eight hundred eighty-nine million, eight hundred sixty-five thousand, nine hundred forty-two".