40660992 has 78 divisors (see below), whose sum is σ = 117557232. Its totient is φ = 13541376.

The previous prime is 40660979. The next prime is 40661029. The reversal of 40660992 is 29906604.

40660992 is a `hidden beast` number, since 40 + 6 + 609 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36313 + ... + 37415.

It is an arithmetic number, because the mean of its divisors is an integer number (1507144).

Almost surely, 2^40660992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58778616).

40660992 is an abundant number, since it is smaller than the sum of its proper divisors (76896240).

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

40660992 is a wasteful number, since it uses less digits than its factorization.

40660992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40660992 is about 6376.5972116796. The cubic root of 40660992 is about 343.8687077841.

The spelling of 40660992 in words is "forty million, six hundred sixty thousand, nine hundred ninety-two".