40392066 has 64 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 11192640.

The previous prime is 40392031. The next prime is 40392067. The reversal of 40392066 is 66029304.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40392067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153451 + ... + 153713.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^40392066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40392066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47900160).

40392066 is an abundant number, since it is smaller than the sum of its proper divisors (55408254).

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

40392066 is a wasteful number, since it uses less digits than its factorization.

40392066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 40392066 is about 6355.4752772708. The cubic root of 40392066 is about 343.1089307706.

It can be divided in two parts, 4039 and 2066, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 40392066 in words is "forty million, three hundred ninety-two thousand, sixty-six".